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Gross Anatomy > Muscles of the arm and forearm > Flashcards

Muscles of the arm and forearm Flashcards

1
Q

biceps brachii

A

anterior arm
Short head:
prox: tip of coracoid process of scap
dist: tuberosity of the radius and bicipital aponeurosis
Long Head:
prox: supragenoid tubercle of the scap
dist: tuberosity of the radius and bicipital aponeurosis

supinate and flex forearm, flex arm

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2
Q

brachialis

A

anterior arm

prox: distal half of ant surface of humerus
dist: coronoid process and tuberosity of ulna

flex forearm

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3
Q

coracobrachialis

A

anterior arm

prox: coracoid process of scap
dist: middle 1/3 of medial surface of humerus

flex and adduct arm

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4
Q

triceps brachii

A

posterior arm
Prox:
-long head: infraglenoid tubercle of scap
-lateral head: post surface of humerus sup to radial groove
-medial head: post surface of humerus inf to radial groove
Dist: olecranon of ulna

extends forearm, long head extends arm

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5
Q

anconeus

A

Posterior arm

prox: lateral epicondyle of humerus
dist: lat surface of olecranon and post part of ulna

extends forearm, abducts ulna during pronation

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6
Q

pronator teres

A

anterior forearm

prox: coronoid process of ulna and medial epicondyles of humerus
dist: lateral surface of radius

pronate and flex forearm

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7
Q

flexor carpi radialis

A

anterior forearm

prox: medial epicondyle
dist: base of 2nd metacarpal

flex and abduct hand

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8
Q

palmaris longus

A

anterior forearm

prox: medial epicondyle
dist: flexor retinaculum and palmar aponeurosis

flex hand, tense palmar aponeurosis

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9
Q

flexor carpi ulnaris

A

anterior forearm

prox: medial epicondyle
dist: pisiform, hook of hamate, fifth metacarpal

flex and adduct hand

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10
Q

flexor digitorum superficialis

A

ant forearm

prox: med epicondyle, coronoid process of ulna, superior shaft of radius
dist: middle phalanx of digits 2-4

flexes proximal interpharyngeal joint and assists in flexion of metacarpophalangeal joints

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11
Q

flexor digitorum profundus

A

ant forearm

prox: shaft of ulna, interosseus membrane
dist: distal phalanx of digits 2-4

flexes distal interphalangeal joint and assists in wrist flexion

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12
Q

flexor policis longus

A

ant forearm

prox: ant surface of radius, interosseous membrane
dist: distal phalanx of thumb

flex phalanges of thumb

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13
Q

pronator quadratus

A

ant forearm

prox: distal 1/4 of ant ulna
dist: distal 1/4 of anterior radius

pronates forearm

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14
Q

brachioradialis

A

post forearm

prox: prox 2/3 of lateral supracondylar ridge of humerus
dist: distal radius near styloid process

flex forearm (especially in thumbs up position)

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15
Q

extensor carpi radialis longus

A

post forearm

prox: distal 1/3 of lateral supracondylar ridge of humerus
dist: base of 2nd metacarpal

extend and abduct hand

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16
Q

extensor carpi radialis brevis

A

post forearm

prox: lateral epicondyle
dist: base of 3rd metacarpal

extend and abduct hand

17
Q

extensor digitorum

A

post forearm

prox: lat epicondyle
dist: extensor expansion of digits 2-5

extends digits 2-5

18
Q

extensor digiti minimi

A

post forearm

prox: lateral epicondyle
dist: extensor expansion of pinky

extends pinky

19
Q

extensor carpi ulnaris

A

post forearm

prox: lat epicondyle and post ulna
dist: base of 5th metacarpal

extend and adducts hand

20
Q

supinator

A

post forearm

prox: lat epicondyle and supinator crest of ulna
dist: prox 1/3 of radius

supinate forearm

21
Q

abductor pollicis longus

A

post forearm

prox: post aspect of the pro radius, ulna, and interosseous membrane
dist: base of 1st metacarpal

abduct and extend thumb

22
Q

extensor pollicis longus

A

post forearm

prox: post aspect of middle 1/3 of ulna and interosseous membrane
dist: base of prox phalanx of thumb

extends thumb

23
Q

extensor pollicis brevis

A

post forearm

prox: post aspect of distal 1/3 of radius and interosseous membrane
dist: base of prox phalanx of thumb

extends thumb

24
Q

extensor indicis

A

post forearm

prox: post aspect of distal 1/3 of ulna and interosseous membrane
dist: extensor expansion of 2nd digit

extends the pointer finger

Gross Anatomy (18 decks)

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