Term
| What is the origin of external intercostals? |
|
Definition
| lower border of upper eleven ribs |
|
|
Term
| What is the insertion of external intercostals? |
|
Definition
| upper border of last eleven ribs |
|
|
Term
| External intercostals are involved in what actions? |
|
Definition
|
|
Term
| What nerve innervates external intercostals? |
|
Definition
|
|
Term
| What is the origin of internal intercostals? |
|
Definition
|
|
Term
| What is the insertion of internal intercostals? |
|
Definition
| upper border of last eleven ribs |
|
|
Term
| Internal intercostals are involved in what actions? |
|
Definition
| inspiration, forced expiration |
|
|
Term
| What nerve innervates internal intercostals? |
|
Definition
|
|
Term
| What is the origin of spinalis? |
|
Definition
| spinous processes of upper lumbar and lower thoracic vertebrae |
|
|
Term
| What is the insertion of spinalis? |
|
Definition
| spinous processes of upper thoracic and cervical vertebrae, except C1 |
|
|
Term
| Spinalis is involved in what actions? |
|
Definition
| extend the spinal column and laterally flex to the side |
|
|
Term
| What nerve innervates Spinalis? |
|
Definition
| dorsal rami of the spinal nerves |
|
|
Term
| Where does Longissimus originate? |
|
Definition
| broad aponeurosis in upper lumbar and lower thoracic, transverse processes of upper 5 thoracic vertebrae |
|
|
Term
| Where does Longissimus insert? |
|
Definition
| lower 9 ribs and transverse processes of thoracic vertebrae, transverse processes of cervical vertebrae, mastoid process of temporal bone |
|
|
Term
| Longissimus is involved in what actions? |
|
Definition
| extend spinal column and laterally flex to side |
|
|
Term
| What nerve innervates Longissimus? |
|
Definition
| dorsal rami of spinal nerves |
|
|
Term
| Where does Iliocostalis originate? |
|
Definition
| sacrospinal aponeurosis and iliac crest, posterior surface of ribs 1-12 |
|
|
Term
| Where does iliocostalis insert? |
|
Definition
| transverse processes of lumbar vertebrae 1-3 and posterior surface of ribs 6-12, posterior surface of ribs 1-6, transverse processes of lower cervical vertebrae |
|
|
Term
| Iliocostalis is involved in what actions? |
|
Definition
| extend spinal column and laterally flex to side |
|
|
Term
| Where does Splenius capitis originate? |
|
Definition
| lower half of ligamentum nuchae and spines of C7-T3/4 |
|
|
Term
| Where does Splenitis capitus insert? |
|
Definition
| under sternocleidomastoid to the mastoid process of the temporal bone and the lateral 1/3 of the superior nuchal line of occipital bone |
|
|
Term
| Splenius capitis is involved in what actions? |
|
Definition
| lateral flexion of head to same side with slight rotation and together head extension |
|
|
Term
| What nerve innervates Splenius capitis? |
|
Definition
| lateral branches of dorsal rami of spinal nerves |
|
|
Term
| Where does splenius cervicis originate? |
|
Definition
|
|
Term
| Where does splenius cervicis insert? |
|
Definition
| posterior tubercles of the transverse process of C2,3 |
|
|
Term
| Splenius cervicis is involved in what actions? |
|
Definition
| lateral flexion of head to same side with slight rotation and together head extension |
|
|
Term
| what nerve innervates splenius cervicis? |
|
Definition
| lateral branches of dorsal rami of spinal nerves |
|
|
Term
| where does semispinalis capitis originate? |
|
Definition
| tips of transverse processes of C7-T6/7, articular processes of C4-6, spine of C7 or T1 |
|
|
Term
| where does semispinalis capitis insert? |
|
Definition
| b/w superior and inferior nuchal lines of the occipital bone |
|
|
Term
| semispinalis capitis is involved in what actions? |
|
Definition
| together neck extension and independently lateral flexion to same side |
|
|
Term
| what nerve innervates semispinalis capitis? |
|
Definition
| dorsal rami of cervical and thoracic nerves |
|
|
Term
| where does semispinalis cervicis originate? |
|
Definition
| transverse process of T1-T5/6 |
|
|
Term
| Where does semispinalis cervicis insert? |
|
Definition
| spinous processes of C2-C5 |
|
|
Term
| semispinalis cervicis is involved in what actions? |
|
Definition
| together neck extension and independently lateral flexion to same side |
|
|
Term
| what nerve innervates semispinalis cervicis? |
|
Definition
| dorsal rami of cervical nerves |
|
|
Term
| where does semispinalis thoracis originate? |
|
Definition
| transverse processes of T6-10 |
|
|
Term
| where does semispinalis thoracis insert? |
|
Definition
| spinous processes of C6-T4 |
|
|
Term
| semispinalis thoracis is involved in what actions? |
|
Definition
| together neck extension and independently lateral flexion to same side |
|
|
Term
| what nerve innervates semispinalis thoracis? |
|
Definition
| dorsal rami of cervical nerves |
|
|
Term
| where does multifidus originate and insert? |
|
Definition
| fill up the space on either side of the spinous processes from the axis to the sacrum |
|
|
Term
| multifidus is involved in what actions? |
|
Definition
| rotation toward opposite side and extension |
|
|
Term
| what nerve innervates multifidus? |
|
Definition
| dorsal rami of spinal nerves |
|
|
Term
| where does rotatores originate and insert? |
|
Definition
| deepest layer in the groove between the spinous processes and transverse processes from axis to sacrum |
|
|
Term
| rotatores is involved in what actions? |
|
Definition
| rotation toward opposite side and extension |
|
|
Term
| what nerve innervates rotatores? |
|
Definition
| dorsal rami of spinal nerves |
|
|
Term
| where does interspinales originate and insert? |
|
Definition
| placed in pairs b/w the spinous processes of contiguous vertebrae |
|
|
Term
| interspinales is involved in what actions? |
|
Definition
|
|
Term
| what nerve innervates interspinales? |
|
Definition
| dorsal rami of spinal nerves |
|
|
Term
| where does intertransversarii originate and insert? |
|
Definition
| small muscles placed between the transverse processes |
|
|
Term
| intertransversarii is involved in what actions? |
|
Definition
|
|
Term
| what nerve innervates intertransversarii? |
|
Definition
| dorsal (and some ventral) rami of spinal nerves |
|
|
Term
| where does rectus capitis posterior major originate? |
|
Definition
|
|
Term
| where does rectus capitis posterior major insert? |
|
Definition
| lateral part of inferior nuchal line of occipital bone |
|
|
Term
| rectus capitis posterior major is involved in what actions? |
|
Definition
| extends the head and turns the face to the same side |
|
|
Term
| what nerve innervates rectus capitis posterior major? |
|
Definition
| dorsal ramus of the first cervical spinal nerve |
|
|
Term
| where does rectus capitis posterior minor originate? |
|
Definition
|
|
Term
| where does rectus capitis posterior minor insert? |
|
Definition
| medial part of inferior nuchal line of occipital bone |
|
|
Term
| rectus capitis posterior minor is involved in what actions? |
|
Definition
|
|
Term
| what nerve innervates rectus capitis posterior minor? |
|
Definition
| dorsal ramus of the first cervical spinal nerve |
|
|
Term
| where does oblique capitus superior originate? |
|
Definition
| upper surface of transverse process of C1 |
|
|
Term
| where does oblique capitis superior insert? |
|
Definition
| b/w superior and inferior nuchal lines of occipital bone |
|
|
Term
| oblique capitis superior is involved in what actions? |
|
Definition
|
|
Term
| what nerve innervates oblique capitis superior? |
|
Definition
| dorsal ramus of the first cervical spinal nerve |
|
|
Term
| where does oblique capitis inferior originate? |
|
Definition
| spinous process of C2 and adjacent part of upper lamina |
|
|
Term
| where does oblique capitis inferior insert? |
|
Definition
| lower and back part of the transverse process of C1 |
|
|
Term
| oblique capitis inferior is involved in what actions? |
|
Definition
| extends the head and turns the head to the same side |
|
|
Term
| what nerve innervates oblique capitis inferior? |
|
Definition
| dorsal ramus of the first cervical spinal nerve |
|
|
Term
| where does sternocleidomastoid originate? |
|
Definition
| sternal head- top of the manubrium, clavicular head- medial 1/3 of clavicle |
|
|
Term
| where does sternocleidomastoid insert? |
|
Definition
| mastoid process of temporal bone and lateral superior nuchal line |
|
|
Term
| sternocleidomastoid is involved in what actions? |
|
Definition
| unilaterally flexes head to the same side, rotates head to the opposite side |
|
|
Term
| what nerve innervates sternocleidomastoid? |
|
Definition
|
|
Term
| where does sternohyoid originate? |
|
Definition
| posterior surface of medial end of clavicle and upper posterior part of the manubrium |
|
|
Term
| where does sternohyoid insert? |
|
Definition
| inferior border of body of hyoid |
|
|
Term
| sternohyoid is involved in what actions? |
|
Definition
| depresses the hyoid bone an larynx |
|
|
Term
| what nerve innervates sternohyoid? |
|
Definition
| cervical spinal nerves C1-C3 |
|
|
Term
| where does omohyoid originate? |
|
Definition
| superior border of scapula near suprascapular notch |
|
|
Term
| where does omohyoid insert? |
|
Definition
| inferior border of hyoid bone |
|
|
Term
| omohyoid is involved in what actions? |
|
Definition
| depresses, retracts, and steadies the hyoid bone |
|
|
Term
| what nerve innervates omohyoid? |
|
Definition
| cervical spinal nerves C1-C3 |
|
|
Term
| where does thyrohyoid originate? |
|
Definition
| thyroid cartilage of larynx |
|
|
Term
| where does thyrohyoid insert? |
|
Definition
| inferior border of greater cornu and body of hyoid bone |
|
|
Term
| thyrohyoid is involved in what actions? |
|
Definition
| elevates larynx, depresses hyoid bone |
|
|
Term
| what nerve innervates thyrohyoid? |
|
Definition
| cervical nerves C1-C2 via hypoglossal nerve |
|
|
Term
| where does sternothyroid originate? |
|
Definition
| posterior surface of the manubrium and costal cartilage of the first rib |
|
|
Term
| where does sternothyroid insert? |
|
Definition
| thyroid cartilage of larynx |
|
|
Term
| sternothyroid is involved in what actions? |
|
Definition
| depresses the hyoid bone and larynx |
|
|
Term
| what nerve innervates sternothyroid? |
|
Definition
| cervical spinal nerves C1-C3 |
|
|
Term
| where do the scalenes originate? |
|
Definition
anterior- transverse process of C3-C6
middle- transverse processes of axis to C7
posterior- transverse process of C4-C6 |
|
|
Term
| where do the scalenes insert? |
|
Definition
anterior- inner border of 1st rib
middle- upper surface of 1st rib
posterior- outer surface of 2nd rib |
|
|
Term
| scalenes are involved in what actions? |
|
Definition
anterior- laterally flexes the neck and rotates the head to opposite side, if neck is stable it assists in elevating the 1st rib
middle & posterior- laterally flexes the neck, if neck is stable it assists in elevating the 1st rib |
|
|
Term
| what nerves innervate the scalenes? |
|
Definition
anterior- ventral rami of C4-C6 spinal nerves
middle- ventral rami of C3-C8 spinal nerves
posterior- ventral rami of C6-C8 spinal nerves |
|
|
Term
| where does the deltoid originate? |
|
Definition
| lateral part of clavicle, acromion, apine of scapula |
|
|
Term
| where does deltoid insert? |
|
Definition
| deltoid tuberosity of humerus |
|
|
Term
| deltoid is involved in what actions? |
|
Definition
abduction
anterior head- shoulder flexion, horizontal adduction, and internal rotation
posterior head- shoulder extension, horizontal abduction, and external rotation |
|
|
Term
| what nerve innervates deltoid? |
|
Definition
|
|
Term
| where does pectoralis major originate? |
|
Definition
| medial part of clavicle, sternum, ribs (2-6) |
|
|
Term
| where does pectoralis major insert? |
|
Definition
| humerus; lateral lip of intertubercular groove |
|
|
Term
| pectoralis major is involved in what actions? |
|
Definition
| shoulder adduction, internal rotation, flexion, extension, and horizontal adduction |
|
|
Term
| what nerve innervates pectoralis major? |
|
Definition
| lateral and medial pectoral |
|
|
Term
| where does subscapularis originate? |
|
Definition
| costal surface of scapula |
|
|
Term
| where does subscapularis insert? |
|
Definition
| lesser tubercle of humerus |
|
|
Term
| subscapularis is involved in what actions? |
|
Definition
| internal rotation of shoulder |
|
|
Term
| what nerve innervates subscapularis? |
|
Definition
| upper and lower subscapular |
|
|
Term
| where does coracobrachialis originate? |
|
Definition
|
|
Term
| where does coracobrachialis insert? |
|
Definition
| medial aspect of humerus, halfway down |
|
|
Term
| coracobrachialis is involved in what actions? |
|
Definition
| shoulder flexion and adduction |
|
|
Term
| what nerve innervates coracobrachialis? |
|
Definition
|
|
Term
| where does biceps brachii originate? |
|
Definition
long head- superior lip of glenoid fossa
short head- coracoid process |
|
|
Term
| where does biceps brachii insert? |
|
Definition
| tuberosity of radius and lacertus fibrosus |
|
|
Term
| biceps brachii are involved in what actions? |
|
Definition
| elbow flexion and supination, shoulder flexion |
|
|
Term
| what nerve innervates biceps brachii? |
|
Definition
|
|
Term
| where does latissimus dorsi originate? |
|
Definition
| lower six thoracic spines, lumbar and sacral spines, crest of ilium |
|
|
Term
| where does latissimus dorsi insert? |
|
Definition
| intertubercular groove on humerus- usually receives fibers on scapular inferior angle |
|
|
Term
| latissimus dorsi is involved in what actions? |
|
Definition
| adduction, extension, and internal rotation of shoulder, shoulder girdle depression |
|
|
Term
| what nerve innervates latissimus dorsi? |
|
Definition
|
|
Term
| where does teres major originate? |
|
Definition
| dorsal surface of axillary border of scapula near inferior angle |
|
|
Term
| where does teres major insert? |
|
Definition
| medial lip of intertubercular groove |
|
|
Term
| teres major is involved in what actions? |
|
Definition
| extension, adduction, and internal rotation of shoulder |
|
|
Term
| what nerve innervates teres major? |
|
Definition
|
|
Term
| where do triceps originate? |
|
Definition
long head- infraglenoid tubercle
lateral head- back of humerus from middle of shaft to greater tuberosity
medial head- lower posterior part of humerus |
|
|
Term
|
Definition
| olecranon process of ulna |
|
|
Term
| triceps are involved in what actions? |
|
Definition
long head- shoulder extension and adduction
all parts- elbow extension |
|
|
Term
| what nerve innervates triceps? |
|
Definition
|
|
Term
| where does supraspinatus originate? |
|
Definition
| surface of scapula above the spine (supraspinous fossa) |
|
|
Term
| where does supraspinatous insert? |
|
Definition
| greater tubercle of humerus, upper facet |
|
|
Term
| supraspinatous is involved in what actions? |
|
Definition
|
|
Term
| what nerve innervates supraspinatous? |
|
Definition
|
|
Term
| what nerve innervates supraspinatous? |
|
Definition
|
|
Term
| where does infraspinatous originate? |
|
Definition
| infraspinous fossa of scapula |
|
|
Term
| where does infraspinatous insert? |
|
Definition
| middle facet of greater tubercle of humerus |
|
|
Term
| infraspinatous is involved in what actions? |
|
Definition
| shoulder external rotation |
|
|
Term
| what nerve innervates infraspinatous? |
|
Definition
|
|
Term
| where does teres minor originate? |
|
Definition
| dorsal surface of axillary border of scapula |
|
|
Term
| where does teres minor insert? |
|
Definition
| lower facet of greater tubercle of humerus |
|
|
Term
| teres minor is involved in what actions? |
|
Definition
| shoulder external rotation |
|
|
Term
| what nerve innervates teres minor? |
|
Definition
|
|
Term
| what are the rotator cuff muscles? |
|
Definition
| supraspinatus, infraspinatus, teres minor, subscapularis |
|
|
Term
| where does trapezius originate? |
|
Definition
| external occipital protuberance, ligamentum nuchae, thoracic vertebrae |
|
|
Term
| where does trapezius insert? |
|
Definition
| lateral portion of clavicle, acromion, spine of scapula |
|
|
Term
| trapezius is involved in what actions? |
|
Definition
| elevation, adduction, and upward rotation of shoulder girdle (upper part); adduction of scapulae (middle part); depression, adduction, and upward rotation of shoulder girdle (lower part) |
|
|
Term
| what nerve innervates trapezius? |
|
Definition
|
|
Term
| where do rhomboids originate? |
|
Definition
| spines of last cervical and first five thoracic vertebrae |
|
|
Term
| where does rhomboids insert? |
|
Definition
| vertebral border of scapulae (below spine) |
|
|
Term
| rhomboids are involved in what actions? |
|
Definition
| elevation, adduction, downward rotation of scapula |
|
|
Term
| what nerve innervates rhomboids? |
|
Definition
|
|
Term
| where does levator scapulae originate? |
|
Definition
| transverse processes of T1-3/4 |
|
|
Term
| where does levator scapulae insert? |
|
Definition
| vertebral border of scapula above spine |
|
|
Term
| levator scapulae is involved in what actions? |
|
Definition
| elevation, adduction, downward rotation of scapula |
|
|
Term
| what nerve innervates levator scapulae? |
|
Definition
|
|
Term
| where does pectoralis minor originate? |
|
Definition
|
|
Term
| where does pectoralis minor insert? |
|
Definition
|
|
Term
| pectoralis minor is involved in what actions? |
|
Definition
| depression and abduction of scapula (anterior tilting of scapula) |
|
|
Term
| what nerve innervates pectoralis minor? |
|
Definition
|
|
Term
| where does serratus anterior originate? |
|
Definition
|
|
Term
| where does serratus anterior insert? |
|
Definition
| costal surface of medial border of scapula |
|
|
Term
| serratus anterior is involved in what actions? |
|
Definition
| abduction of scapula, lower portion pulls inferior angle lateral thereby assisting the trapezius in upward rotation |
|
|
Term
| what nerve innervates serratus anterior? |
|
Definition
|
|
Term
| where does subclavius originate? |
|
Definition
|
|
Term
| where does subclavius insert? |
|
Definition
|
|
Term
| subclavius is involved in what actions? |
|
Definition
|
|
Term
| what nerve innervates subclavius? |
|
Definition
| 5th & 6th cervical nerve roots |
|
|
Term
| where does anconeus originate? |
|
Definition
| posterior surface of external condyle of humerus |
|
|
Term
| where does anconeus insert? |
|
Definition
| olecranon and shaft of ulna |
|
|
Term
| anconeus is involved in what actions? |
|
Definition
|
|
Term
| what nerve innervates anconeus? |
|
Definition
|
|
Term
| where does supinator originate? |
|
Definition
| lateral epicondyle of humerus and supinator crest of ulna |
|
|
Term
| where does supinator insert? |
|
Definition
| lateral and anterior aspect of radius |
|
|
Term
| supinator is involved in what actions? |
|
Definition
| supination and extension of forearm |
|
|
Term
| what nerve innervates supinator? |
|
Definition
|
|
Term
| where does brachialis originate? |
|
Definition
| lower half of anterior surface of humerus |
|
|
Term
| where does brachialis insert? |
|
Definition
| ulna, just below coronoid process (ulnar tuberosity) |
|
|
Term
| brachialis is involved in what actions? |
|
Definition
|
|
Term
| what nerve innervates brachialis? |
|
Definition
| musculocutaneous and usually radial |
|
|
Term
| where does brachioradialis originate? |
|
Definition
| external supracondylar ridge of humerus |
|
|
Term
| where does brachioradialis insert? |
|
Definition
| styloid process of radius |
|
|
Term
| brachioradialis is invovled in what actions? |
|
Definition
| elbow flexion, pronation and supination to neutral |
|
|
Term
| what nerve innervates brachioradialis? |
|
Definition
|
|
Term
| where does pronator teres originate? |
|
Definition
| medial epicondylar ridge and medial side of coronoid process |
|
|
Term
| where does pronator teres insert? |
|
Definition
| middle of lateral surface of shaft of radius |
|
|
Term
| pronator teres is involved in what actions? |
|
Definition
| pronation and elbow flexion |
|
|
Term
| what nerve innervates pronator teres? |
|
Definition
|
|
Term
| where does pronator quadratus originate? |
|
Definition
| lower fourth and anterior border of ulna |
|
|
Term
| where does pronator quadratus insert? |
|
Definition
| lower fourth of lateral anterior surface of shaft of radius |
|
|
Term
| pronator quadratus is involved in what actions? |
|
Definition
|
|
Term
| what nerve innervates pronator quadratus? |
|
Definition
|
|
Term
| where does flexor carpi radialis originate? |
|
Definition
| medial epicondyle of humerus |
|
|
Term
| where does flexor carpi radialis insert? |
|
Definition
| second metacarpal on anterior, plus a slip to the third metacarpal |
|
|
Term
| flexor carpi radialis is involved in what actions? |
|
Definition
| wrist flexion and radial deviation, elbow flexion |
|
|
Term
| what nerve innervates flexor carpi radialis? |
|
Definition
|
|
Term
| where does palmaris longus originate? |
|
Definition
| medial epicondyle of humerus |
|
|
Term
| where does palmaris longus insert? |
|
Definition
| palmar fascia and transverse carpal ligament |
|
|
Term
| palmaris longus is involved in what actions? |
|
Definition
| wrist flexion, elbow flexion |
|
|
Term
| what nerve innervates palmaris longus? |
|
Definition
|
|
Term
| where does flexor carpi ulnaris originate? |
|
Definition
| medial epicondyle of humerus, and proximal posterior surface of ulna |
|
|
Term
| where does flexor carpi ulnaris insert? |
|
Definition
| pisiform, hamate, 5th metacarpal |
|
|
Term
| flexor carpi ulnaris is involved in what actions? |
|
Definition
| wrist flexion and ulnar deviation, elbow flexion |
|
|
Term
| what nerve innervates flexor carpi ulnaris? |
|
Definition
|
|
Term
| where does flexor digitorum superficialis originate? |
|
Definition
| medial epicondyle of humerus and anterior oblique line of radius, coronoid process of ulna |
|
|
Term
| where does flexor digitorum superficialis insert? |
|
Definition
| middle phalanges of 2nd to 5th fingers |
|
|
Term
| flexor digitorum superficialis is invovled in what actions? |
|
Definition
| flexion of the middle and proximal phalanges of four fingers, wrist flexion and elbow flexion |
|
|
Term
| what nerve innervates flexor digitorum superficialis? |
|
Definition
|
|
Term
| where does flexor digitorum profundus originate? |
|
Definition
| proximal 2/3 of anterior and medial surface of ulna |
|
|
Term
| where does flexor digitorum profundus insert? |
|
Definition
| terminal phalanges of 2nd to 5th fingers |
|
|
Term
| flexor digitorum profundus is involved in what actions? |
|
Definition
| finger flexion, wrist flexion |
|
|
Term
| what nerve innervates flexor digitorum profundus? |
|
Definition
|
|
Term
| where does flexor pollicus longus originate? |
|
Definition
| volar surface of body of radius and interosseous membrane |
|
|
Term
| where does flexor pollicus longus insert? |
|
Definition
| base of terminal phalanx of thumb |
|
|
Term
| flexor pollicus longus is involved in what actions? |
|
Definition
|
|
Term
| what nerve innervates flexor pollicus longus? |
|
Definition
|
|
Term
| where does extensor carpi ulnaris originate? |
|
Definition
| lateral epicondyle of humerus and posterior lateral ulna |
|
|
Term
| where does extensor carpi ulnaris insert? |
|
Definition
| 5th metacarpal (medial side of base) |
|
|
Term
| extensor carpi ulnaris is involved in what actions? |
|
Definition
| wrist extension and ulnar deviation |
|
|
Term
| what nerve innervates extensor carpi ulnaris? |
|
Definition
|
|
Term
| were does extensor carpi radialis longus originate? |
|
Definition
| lateral supracondylar ridge of humerus |
|
|
Term
| where does extensor carpi radialis longus insert? |
|
Definition
| base of second metacarpal on dorsal surface |
|
|
Term
| extensor carpi radialis longus is involved in what actions? |
|
Definition
| wrist extension, radial deviation, elbow flexion |
|
|
Term
| what nerve innervates extensor carpi radialis longus? |
|
Definition
|
|
Term
| where does extensor carpi radialis brevis originate? |
|
Definition
| lateral epicondyle of humerus |
|
|
Term
| where does extensor carpi radialis brevis insert? |
|
Definition
| base of 3rd metacarpal on dorsal surface |
|
|
Term
| extensor carpi radialis brevis is involved in what actions? |
|
Definition
| wrist extension, radial deviation, elbow flexion |
|
|
Term
| what nerve innervates extensor carpi radialis brevis? |
|
Definition
|
|
Term
| where does extensor digitorum originate? |
|
Definition
| lateral epicondyle of humerus |
|
|
Term
| where does extensor digitorum insert? |
|
Definition
| four tendons into extensor expansion of 2nd-5th fingers |
|
|
Term
| extensor digitorum is involved in what actions? |
|
Definition
| extension of metacarpophalangeal joints, wrist extension |
|
|
Term
| what nerve innervates extensor digitorum? |
|
Definition
|
|
Term
| where does extensor digiti minimi originate? |
|
Definition
| lateral epicondyle of humerus |
|
|
Term
| where does extensor digiti minimi insert? |
|
Definition
| dorsum of proximal phalanx of 5th finger and tendon of extensor digitorum |
|
|
Term
| extensor digiti minimi is involved in what actions? |
|
Definition
| extends and abducts 5th finger, wrist extension |
|
|
Term
| what nerve innervates extensor digiti minimi? |
|
Definition
|
|
Term
| where does abductor pollicis longus originate? |
|
Definition
| posterior surface of radius and ulna |
|
|
Term
| where does abductor pollicis longus insert? |
|
Definition
|
|
Term
| abductor pollicis longus is involved in what actions? |
|
Definition
| extends 1st metacarpal, wrist radial deviation |
|
|
Term
| what nerve innervates abductor pollicis longus? |
|
Definition
|
|
Term
| where does extensor pollicis brevis originate? |
|
Definition
| posterior surface of radius, interosseous membrane |
|
|
Term
| where does extensor pollicis brevis insert? |
|
Definition
| posterior surface of first phalanx of thumb |
|
|
Term
| extensor pollicis brevis is involved in what actions? |
|
Definition
| extends proximal phalanx of thumb and radial deviation |
|
|
Term
| what nerve innervates extensor pollicis brevis? |
|
Definition
|
|
Term
| where does extensor pollicis longus originate? |
|
Definition
| middle 1/3 of dorso-lateral surface of ulna, interosseous membrane |
|
|
Term
| where does extensor pollicis longus insert? |
|
Definition
| base of 2nd phalanx of thumb |
|
|
Term
| extensor pollicis longus is involved in what actions? |
|
Definition
| extends distal phalanx of thumb, extends first metacarpal, radial deviation, wrist extension |
|
|
Term
| what nerve innervates extensor pollicis longus? |
|
Definition
|
|
Term
| where does extensor indicis originate? |
|
Definition
| dorsal surface of ulna from middle to lower portion and interosseous membrane of its distal end |
|
|
Term
| where does extensor indicis insert? |
|
Definition
| second and third phalanges of index finger (via tendon of extensor digitorum longus) |
|
|
Term
| extensor indicis is involved in what actions? |
|
Definition
| extends index finger, wrist extension |
|
|
Term
| what nerve innervates extensor indicis? |
|
Definition
|
|
Term
| where does opponens pollicis originate? |
|
Definition
| transverse carpal ligament, ridge of greater multangular |
|
|
Term
| where does opponens pollicis insert? |
|
Definition
| whole length of lateral border of 1st metacarpal |
|
|
Term
| opponens pollicis is involved in what actions? |
|
Definition
|
|
Term
| what nerve innervates opponens pollicis? |
|
Definition
|
|
Term
| where does abductor pollicis brevis originate? |
|
Definition
| ridge of greater multangular, tuberosity of navicular and transverse carpal ligament |
|
|
Term
| where does abductor pollicis brevis insert? |
|
Definition
| radial side of first phalanx of thumb |
|
|
Term
| abductor pollicis brevis is involved in what actions? |
|
Definition
| abducts phalanx of thumb and 1st metacarpal |
|
|
Term
| what nerve innervates abductor pollicis brevis? |
|
Definition
|
|
Term
| where does flexor pollicis brevis originate? |
|
Definition
| lower border of transverse carpal ligament and ridge of greater multangular |
|
|
Term
| where does flexor pollicis brevis insert? |
|
Definition
| radial side of base of first phalanx of thumb |
|
|
Term
| flexor pollicis brevis is involved in what actions? |
|
Definition
| flexes first phalanx of thumb, and first metacarpal |
|
|
Term
| what nerve innervates flexor pollicis brevis? |
|
Definition
|
|
Term
| where does adductor pollicis originate? |
|
Definition
transverse head from third metacarpal bone
oblique head from capitate, the bases of the second and 3rd metacarpal bones and greater and lesser multangular |
|
|
Term
| where does adductor pollicis insert? |
|
Definition
| ulnar side of first phalanx of thumb |
|
|
Term
| adductor pollicis is involved in what actions? |
|
Definition
| adducts and flexes proximal phalanx of thumb and first metacarpal, aids in opposition |
|
|
Term
| what nerve innervates adductor pollicis? |
|
Definition
|
|
Term
| where does palmaris brevis originate? |
|
Definition
| ulnar side of transverse carpal ligament and palmar fascia |
|
|
Term
| where does palmaris brevis insert? |
|
Definition
| skin on ulnar border of palm |
|
|
Term
| palmaris brevis is involved in what actions? |
|
Definition
| causes skin of ulnar border of the palm to wrinkle, deepens the palm of the hand |
|
|
Term
| what nerve innervates palmaris brevis? |
|
Definition
|
|
Term
| where do the lumbricals originate? |
|
Definition
| plam of hand from tendons of flexor digitorum profundus |
|
|
Term
| where do lumbricals insert? |
|
Definition
| tendons of extensor digitorum communis |
|
|
Term
| lumbricals are involved in what actions? |
|
Definition
| flexion of metacarpophalangeal joints and extension of interphalangeal |
|
|
Term
| what nerve innervates lumbricals? |
|
Definition
median- 1st & 2nd finger
ulnar- 3rd & 4th fingers |
|
|
Term
| where does abductor digiti minimi originate? |
|
Definition
| pisiform bone and tendon of flexor carpi ulnaris |
|
|
Term
| where does abductor digiti minimi insert? |
|
Definition
| medial margin of base of 1st phalanx of 5th finger |
|
|
Term
| abductor digiti minimi is involved in what actions? |
|
Definition
|
|
Term
| what nerve innervates abductor digiti minimi? |
|
Definition
|
|
Term
| where does flexor digiti minimi brevis originate? |
|
Definition
| transverse carpal ligament, hamulus of hamate bone |
|
|
Term
| where does flexor digiti minimi brevis insert? |
|
Definition
| ulnar side of base of proximal phalanx of 5th finger |
|
|
Term
| flexor digiti minimi brevis is involved in what actions? |
|
Definition
| flexes proximal phalanx of 5th finger |
|
|
Term
| what nerve innervates flexor digiti minimi brevis? |
|
Definition
|
|
Term
| where does opponens digiti minimi originate? |
|
Definition
| flexor retinaculum, hamulus of hamate bone |
|
|
Term
| where does opponens digiti minimi insert? |
|
Definition
| ulnar side of 5th metacarpal bone |
|
|
Term
| opponens digiti minimi is involved in what actions? |
|
Definition
| moves 5th metacarpal bone forward (opposition) |
|
|
Term
| what nerve innervates opponens digiti minimi? |
|
Definition
|
|
Term
| where do dorsal interossei originate? |
|
Definition
| by two heads from adjacent sides of metacarpal bones |
|
|
Term
| where do dorsal interossei insert? |
|
Definition
first head- radial side of 1st phalanx of 2nd finger
second head- radial side of 1st phalanx of 3rd finger
third head- ulnar side of 1st phalanx of 3rd finger
fourth head- ulnar side of 1st phalanx of 4th finger |
|
|
Term
| dorsal interossei are involved in what actions? |
|
Definition
| 1st & 4th heads abduct 2nd and 4th fingers from 3rd finger, 2nd and 3rd heads pull 3rd finger medially or laterally |
|
|
Term
| what nerve innervates dorsal interossei? |
|
Definition
|
|
Term
| where do palmar interossei originate? |
|
Definition
first head- ulnar side of palmar surface of base of 1st metacarpal
second head- ulnar side of second metacarpal bone
third head- radial side of fourth metacarpal bone
fourth head- radial side of 5th metacarpal bone |
|
|
Term
| where do palmar interossei insert? |
|
Definition
first head- sesamoid bone on ulnar side of proximal phalanx of thumb
second head- ulnar side of 1st phalanx of 2nd finger
third head- radial side of 1st phalanx of 4th finger
fourth head- radial side of 1st phalanx of 5th finger |
|
|
Term
| palmar interossei are involved in what actions? |
|
Definition
| adduction of 1st, 2nd, 4th, 5th fingers toward 3rd finger |
|
|
Term
| what nerve innervates palmar interossei? |
|
Definition
|
|
