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MCB 334 Muscle quiz 1
upper extremities origins, insertions, and innervations
41
Anatomy
Undergraduate 4
02/23/2011

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Term
Trapezius Upper fibers
Definition
O: superior nuchal line, occipital protuberance, and upper ligamentum nuchae

i: posterior surface of the lateral 1/3 of clavicle

n: accessory nerve (XI) and branches of the cervical plexus
Term
Trapezius Middle fibers
Definition
o: lower ligamentum nuchae, spines of 7th cervical and upper thoracic vertebra and corresponding supraspinous ligaments

i: acromian process

n: accessory nerve and branches of the cervical plexus
Term
Trapezius Lower fibers
Definition
o: spines of the lower thoracic vertebra and corresponding supraspinous ligaments

i: spine of scapula

n: accessory nerve and branches of the cervical plexus
Term
Latissimus Dorsi
Definition
o: spines of the lower 6 thoracic vertebra, the thoracolumbar fascia, and the spines of the lumbar and sacral vertebra and their supraspinous ligaments, crest of the illium

i: intertubercular sulcus of the humerus

n: thoracodorsal nerve
Term
Rhomboideus Major
Definition
o: spinous process and corresponding supraspinous ligaments of t 2-5

i: vertebral margin of the scapula below the medial end of the spine

n: dorsal scapular nerve
Term
Rhomboideus Minor
Definition
o: lower part of the ligamentum nuchae and the spines of the 7th cervical vertebra and the 1st thoracic vertebra

i: the vertebral margin of the scapula at the medial end of the spine

n: dorsal scapular nerve
Term
Teres Major
Definition
o: inferior angle of the scapula

i: crest of the lesser tubercle of the humerus

n: the lower subscapular nerve
Term
Teres Minor
Definition
o: axillary border of the scapula

i: greater tubercle of the humerus

n: axillary nerve
Term
Infraspinatus
Definition
o: infraspinous fossa

i: greater tubercle of the humerus

n: suprascapular nerve
Term
Supraspinatus
Definition
o: supraspinous fossa of the scapula

i: greater tubercle of the humerus

n: suprascapular nerve
Term
Subscapularis
Definition
o: subscapular fossa

i: lesser tubercle of humerus

n: upper and lower subscapular nerves
Term
Deltoid
Definition
o: lateral 1/3 of clavicle, acromion, and spine of scapula

i: deltoid tuberosity on humerus

n: axillary nerve
Term
Serratus Anterior
Definition
o: ribs 1-8 or 9

i: anterior surface of the vertebral border of the scapula, the insertion at the inferior angle is large

n: long thoracic nerve
Term
Pectoralis Major
Definition
o: clavicular head: anterior border of the medial half of clavicle
sternocostal head: manubrium and body of sternum from rib cartilages 1-6

i: crest of the greater tubercle

n: lateral and medial pectoral nerve
Term
Pectoralis Minor
Definition
o: ribs 3, 4, and 5

i: corocoid process of the scapula

n: medial pectoral nerve
Term
Brachialis
Definition
o:the lower anterior 1/2 of the humerus

i: ulnar tuburosity and the coronoid process of the ulna

n: musculocutaneous nerve
Term
Coracobrachialis
Definition
o: coracoid process of the scapula

i: impression midway along the medial border of the shaft of the humerus

n: musculocutaneous nerve
Term
Biceps Brachii
Definition
o: Long head: supraglenoid tubercle of the scapula
short head: coracoid process of the scapula

i: radial tuberosity and the bicipital aponeurosis

n: musculocutaneous
Term
Triceps Brachii
Definition
o: Long head: infraglenoid tubercle of the scapula
Medial head: posteromedial surface of the humerus below the radial groove
Lateral head: posterolateral surface of the humerus below the radial groove

i: olecrenon process of the ulna

n: radial nerve
Term
Pronator Teres
Definition
o: humeral head: common flexor tendon
ulnar head: coronoid process of the ulna

i: lateral surface of the middle 1/3 of the radius

n: median nerve
Term
Flexor Carpi Radialis
Definition
o: common flexor tendon
i: the base of the 2nd metacarpal bone
n: the median nerve
Term
Palmaris Longus
Definition
o: the common flexor tendon
i: the palmar aponeurosis
n: the median nerve
Term
Flexor Digitorum Superficialis
Definition
o: Humeroulner head: the common flexor tendon and the coronoid process of ulna
radial head: proximal radius
i: the shaft of the middle phalanx of fingers 2-5
n: the median nerve
Term
Flexor Carpi Ulnaris
Definition
o: humeral head: the common flexor tendon
ulnar head: the medial margin of the olecrenon of the ulna and the upper 2/3s of the posterior border of the ulna
i: the pisiform bone, the hamate bone and the base of the metacarpal bones
n: ulnar nerve
Term
Pronator Quadratus
Definition
o: from the distal 1/4 of the anterior surface of the shaft of the ulna
i: to the distal 1/4 of the anterior surface of the shaft of the radius
n: the anterior interosseus branch of the median nerve
Term
Flexor Pollicis Longus
Definition
o: anterior surface of the radius and the adjacent interosseus membrane
i: the base of the distal phalanx of the thumb
n: the anterior interosseus branch of the median nerve
Term
Flexor Digitorum Profundus
Definition
o: upper 3/4s of the ulna and adjacent ulnar half of the interosseus membrane
i: the base of the distal phalanges 2-5
n: the ulnar half by the ulnar nerve and the radial half by the anterior interosseus nerve branch of the median nerve
Term
Alconeus
Definition
o: the lateral epicondyle of the humerus
i: the olecrenon, the upper 1/4 of the posterior surface of the ulna
n: the radial nerve
Term
Supinator
Definition
o: the supinator crest of the ulna and the supinator fossa of the ulna
i: the lateral surface of the proximal 1/3 of the radius
n: the posterior interosseus nerve
Term
Extensor Pollicis Brevis
Definition
o: the posterior surface of the radius/the adjacent interosseus membrane
i: the base of the proximal phalanx of the thumb
n: the posterior interosseus nerve
Term
Extensor Pollicis Longus
Definition
o: the middle 1/3 of the posterior surface of the shaft of the ulna, the adjacent interosseus membrane
i: the base of the distal phalanx of the thumb
n: the posterior interosseus nerve
Term
Abductor Pollicis Longus
Definition
o: the posterior surface of the shaft of the ulna, the posterior surface of the shaft of the radius, the interosseus membrane
i: the base of the first metacarpal bone
n: the posterior interosseus nerve
Term
Extensor Indicis
Definition
o: the posterior surface of the ulna, the adjacent interosseus membrane
i: the extensor aponeurosis (dorsal digital expansion) of the 2nd digit
n: the posterior interosseus nerve
Term
Abductor Pollicis Brevis
Definition
o:flexor retinaculum
i: the base of the proximal phalanx of the thumb
n: the recurrent branch of the lateral terminal branch of the median nerve
Term
Opponens Pollicis
Definition
o: the flexor retinaculum
i: the metacarpal bone of the thumb
n: the recurrent branch of the lateral terminal branch of the median nerve
Term
Flexor Pollicis Brevis
Definition
o: flexor retinaculum
i: the base of the proximal phalanx of the thumb
n: the recurrent branch of the lateral terminal branch of the median nerve and the deep terminal branch of the ulnar nerve
Term
Palmaris Brevis
Definition
o: flexor retinaculum , the palmar aponeurosis
i: dermis of the ulnar border of the hand
n: the superficial terminal branch of the ulnar nerve
Term
Adductor Pollicis
Definition
o: oblique head: the capitate bone and the bases of the 2nd and 3rd metacarpal bones
Transverse head: the 3rd metacarpal
i: the base of the proximal phalanx of the thumb
n: the deep terminal branch of the ulnar nerve
Term
Abductor Digiti Minimi
Definition
o: the pisiform bone
i: the base of the proximal phalanx of the little finger
n: the deep terminal branch of the ulnar nerve
Term
Flexor Digiti Minimi
Definition
o: the hook of the hamate bone, and the flexor retinaculum
i: the base of the proximal phalanx of the little finger
n: the deep terminal branch of the ulnar nerve
Term
Opponens Digiti Minimi
Definition
o: the hook of the hamate bone and the flexor retinaculum
i: the ulnar side of the 5th metacarpal
n: the deep terminal branch of the ulnar nerve
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