Flexor Surface of Forearm: Superficial Muscle Layer

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Last updated 7:19 PM on 9/6/26
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5 Terms

1
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Muscles on the Superficial Anterior Forearm

4 muscles from medial to lateral

  • Pronator Teres

  • Flexor Carpi Radialis (FCR)

  • Palmaris Longus

  • Flexor Carpi Ulnaris (FCU)


2
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Pronator Teres

O:

humeral head: medial epicondyle

ulnar head: coronoid process of ulna

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

A: pronate the forearm and flex the elbow

N: median nerve

<p>O:</p><p>humeral head: medial epicondyle </p><p>ulnar head: coronoid process of ulna </p><p>I: lateral surface of the middle 1/3 of the radius </p><p>A: pronate the forearm and flex the elbow </p><p>N: median nerve </p>
3
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Flexor Carpi Radialis (FCR)

O: medial epicondyle of the humerus
I: palmar surface of the bases of metacarpals II and III

A: flex and abduct the wrist (radial deviation)

N: median nerve

<p>O: medial epicondyle of the humerus <br>I: palmar surface of the bases of metacarpals II and III</p><p>A: flex and abduct the wrist (radial deviation)</p><p>N: median nerve </p>
4
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Palmaris Longus

O: medial epicondyle of the humerus

I: palmar aponeurosis

A: flex the wrist (weak) and tense the palmar fascia
N: median nerve

<p>O: medial epicondyle of the humerus </p><p>I: palmar aponeurosis </p><p>A: flex the wrist (weak) and tense the palmar fascia <br>N: median nerve </p>
5
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Flexor Carpi Ulnaris (FCU)

O:

humeral head: medial epicondyle

ulnar head: olecranon process and the posterior surface of the ulna

I: pisiform, hook of hamate and the palmar side of the base of the 5th metacarpal

A: flex and ADduct the wrist (ulnar deviation)

N: ulnar nerve

<p>O: </p><p>humeral head: medial epicondyle </p><p>ulnar head: olecranon process and the posterior surface of the ulna </p><p>I: pisiform, hook of hamate and the palmar side of the base of the 5th metacarpal </p><p>A: flex and ADduct the wrist (ulnar deviation)</p><p>N: ulnar nerve </p>