Term
|
Definition
| Inferior edge of the crest of the spine of the scapula, lateral margin of the acromion, anterior border of lateral 1/3 of clavicle |
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Term
|
Definition
| Deltoid tuberosity of humerous |
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Term
|
Definition
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Term
|
Definition
| Major abductor of arm (abducts arm beyond initial 15 degrees done by supraspinatus); clavicular fibers assist in flexing the arm; posterior fibers assist in extending the arm |
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Term
| Pectoralis major - Origin |
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Definition
| Clavicular head-anterior surface of medial half of clavicle; sternocostal head-anterior surface of sternum; first 7 costal cartilages; sternal end of 6th rib; aponeurosis of external oblique |
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Term
| Pectoralis major - Insertion |
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Definition
| Lateral lip of intertubercular sulcus of humerus |
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Term
Pectoralis major - Innervation |
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Definition
| Medial and lateral pectoral nerves; clavicular head [ C5, C6]; Sternocostal head [C6, C7, C8, T1] |
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Term
| Pectoralis major - Function |
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Definition
| Flexion, adduction, and medial rotation of arm at glenohumeral joint; clavicular head- flexion of extended arm; sternocostal head- extension of flexed arm |
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Term
|
Definition
| First rib at junction between rib and costal cartilage |
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Term
|
Definition
| Groove on inferior surface of middle 1/3 of clavicle |
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Term
|
Definition
| Nerve to subclavius [C5, C6] |
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Term
|
Definition
| Pulls tip of shoulder down; pulls clavicle medially to stabilize sternoclavicular joint |
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Term
Pectoralis minor - Origin |
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Definition
| Anterior surfaces and superior borders of ribs III to V; and from deep fascia overlying the related intercostal spaces |
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Term
Pectoralis minor - Insertion |
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Definition
| Coracoid process of scapula (medial border and upper surface) |
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Term
| Pectoralis minor - Innervation |
|
Definition
Medial pectoral nerve [C6, C7, C8] |
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|
Term
| Pectoralis minor - Function |
|
Definition
| Pulls tip of shoulder down; protracts scapula |
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Term
| Coracobrachialis - Origin |
|
Definition
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|
Term
Coracobrachialis - Insertion |
|
Definition
| Linear roughening on mid-shaft of humerus on medial side |
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|
Term
| Coracobrachialis - Innervation |
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Definition
| Musculocutaneous nerve [C5, C6, C7] |
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|
Term
| Coracobrachialis - Function |
|
Definition
Flexor of the arm at the glenohumeral joint |
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Term
|
Definition
Long head- supraglenoid tubercle of scapula; short head- apex of coracoid process |
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|
Term
| Biceps brachii - Insertion |
|
Definition
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|
Term
| Biceps brachii - Innervation |
|
Definition
| Musculocutaneous nerve [C5, C6] |
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|
Term
| Biceps brachii - Function |
|
Definition
| Powerful flexor of the forearm at the elbow join an supinator of the forearm; accessory flexor of the arm at the glenohumeral joint |
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Term
|
Definition
| Anterior aspect of humerus (medial and lateral surfaces) and adjacent intermuscular septae |
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|
Term
|
Definition
|
|
Term
|
Definition
Musculocutaneous nerve [C5, C6]; (small contribution by the radial nerve [C7] to later part of muscle) |
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|
Term
|
Definition
Powerful flexor of the forearm at the elbow joint |
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|
Term
|
Definition
Long head- infraglenoid tubercle of scapula; Medial head- posterior surface of humerus; Lateral head- posterior surface of humerus |
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|
Term
| Triceps brachii - Insertion |
|
Definition
|
|
Term
Triceps brachii - Innervation |
|
Definition
| Radial nerve [C6, C7, C8] |
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|
Term
Triceps brachii - Function |
|
Definition
| Extension of the forearm at the elbow joint. Long head can also extend and adduct the arm at the shoulder joint. |
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Term
|
Definition
| Palmar aponeurosis and flexor retinaculum |
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|
Term
Palmaris brevis - Insertion |
|
Definition
| Dermis of skin on the medial margin of the hand |
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|
Term
| Palmaris brevis - Innervation |
|
Definition
| Superficial branch of the ulnar nerve [C8, T1] |
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|
Term
| Palmaris brevis - Function |
|
Definition
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|
Term
| Dorsal interossei (four muscles) - Origin |
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Definition
| Adjacent sides of metacarpals |
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Term
| Dorsal interossei (four muscles) - Insertion |
|
Definition
| Extensor hood and base of proximal phalanges of index, middle, and ring fingers |
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|
Term
| Dorsal interossei (four muscles) - Innervation |
|
Definition
| Deep branch of ulnar nerve [C8, T1] |
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|
Term
| Dorsal interossei (four muscles) - Function |
|
Definition
| Abduction of index, middle, and ring fingers at the metacarpophalangeal joints |
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|
Term
| Palmar interossei (four muscles) - Origin |
|
Definition
|
|
Term
| Palmar interossei (four muscles) - Insertion |
|
Definition
| Extensor hoods of the thumb, index, ring, and little fingers and the proximal phalanx of the thumb |
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|
Term
Palmar interossei (four muscles) - Innervation |
|
Definition
| Deep branch of ulnar nerve [C8, T1] |
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|
Term
| Palmar interossei (four muscles) - Functions |
|
Definition
| Adduction of the thumb, index, ring, and little fingers at the metacarpophalangeal joints |
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|
Term
| Adductor pollicis - Origin |
|
Definition
Transverse head- metacaarpal Oblique head- capitate and bases of metacarpals I and II |
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|
Term
| Adductor pollicis - Insertion |
|
Definition
| Base of proximal phalanx and extensor hood of thumb |
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|
Term
| Adductor pollicis - Innervation |
|
Definition
Deep branch of ulnar nerve [C8, T1] |
|
|
Term
| Adductor pollicis - Function |
|
Definition
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|
Term
| Lumbricals (four muscles) - Origin |
|
Definition
| Tendon of flexor digitorum profundus |
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|
Term
| Lumbricals (four muscles) - Insertion |
|
Definition
| Extensor hood of index, ring, middle, and little fingers |
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|
Term
Lumbricals (four muscles) - Innervation |
|
Definition
Medial two by the deep branch of the ulnar nerve; Lateral two by digital branches of the median nerve |
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|
Term
| Lumbricals (four muscles) - Function |
|
Definition
| Flex metacarpophalangeal joints while extending interphalangeal joints |
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Term
Opponens pollicis - Origin |
|
Definition
| Tubercle of trapezium and flexor retinaculum |
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|
Term
| Opponens pollicis - Insertion |
|
Definition
| Lateral margin and adjacent palmar surface of metacarpal I |
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Term
| Opponens pollicis - Innervation |
|
Definition
| Recurrent branch of median nerve [C8, T1] |
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|
Term
| Opponens pollicis - Function |
|
Definition
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|
Term
| Abductor pollicis brevis - Origin |
|
Definition
| Tubercles of scaphoid and trapezium and adjacent flexor retinaculum |
|
|
Term
| Abductor pollicis brevis - Insertion |
|
Definition
| Proximal phalanx and entensor hood of thumb |
|
|
Term
| Abductor pollicis brevis - Innervation |
|
Definition
| Recurrent branch of median nerve [C8, T1] |
|
|
Term
| Abductor pollicis brevis - Function |
|
Definition
| Abducts thumb at metacarpophalangeal joint |
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|
Term
| Flexor pollicis brevis - Origin |
|
Definition
| Tubercle of the trapezium and flexor retinaculum |
|
|
Term
| Flexor pollicis brevis - Insertion |
|
Definition
| Proximal phalanx of the thumb |
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|
Term
Flexor pollicis brevis - Innervation |
|
Definition
| Recurren branch of median nerve [C8, T1] |
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|
Term
| Flexor pollicis brevis - Function |
|
Definition
| Flexes thumb at metacarpophalangeal joint |
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|
Term
Opponens digiti minimi - Origin |
|
Definition
| Hood of hamate and flexor retinaculum |
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|
Term
| Opponens digiti minimi - Insertion |
|
Definition
| Medial aspect of metacarpal V |
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|
Term
Opponens digiti minimi - Innervation |
|
Definition
| Deep branch of ulnar nerve [C8, T1] |
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|
Term
Opponens digiti minimi - Function |
|
Definition
| Laterally rotates metacarpal V |
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|
Term
| Abductor digiti minimi - Origin |
|
Definition
| Pisiform, the pisohamate ligament, and tendon flexor cari ulnaris |
|
|
Term
| Abductor digiti minimi - Insertion |
|
Definition
| Proximal phalanx of little finger |
|
|
Term
| Abductor digiti minimi - Innervation |
|
Definition
| Deep branch of ulnar nerve [C8, T1] |
|
|
Term
Abductor digiti minimi - Function |
|
Definition
| Abducts little finger at metacarpophalangeal joint |
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|
Term
| Flexor diditi minimi brevis - Origin |
|
Definition
| Hook of the hamate and flexor retinaculum |
|
|
Term
| Flexor digiti minini brevis - Insertion |
|
Definition
| Proximal phalanx of little finger |
|
|
Term
| Flexor digiti minimi brevis - Innervation |
|
Definition
| Deep branch of ulnar nerve [C8, T1] |
|
|
Term
| Flexor digiti minimi brevis - Function |
|
Definition
| Flexes little finger at metacarpophalangeal joint |
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