Anatomy - MOINA of the Posterior Fascial Compartment of the Forearm

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Last updated 12:57 AM on 7/28/26
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40 Terms

1
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origin of extensor carpi radialis brevis

lateral epicondyle of humerus

2
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insertion of extensor carpi radialis brevis

posterior surface of base of 3rd metacarpal bone

3
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innervation of extensor carpi radialis brevis

deep branch of radial nerve

4
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action of extensor carpi radialis brevis

extends and abducts hand at wrist joint

5
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origin of extensor digitorum

lateral epicondyle of humerus

6
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insertion of extensor digitorum

middle and distal phalanges of medial 4 fingers

7
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innervation of extensor digitorum

deep branch of radial nerve

8
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action of extensor digitorum

extends fingers and hand

9
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origin of extensor digiti minimi

lateral epicondyle of humerus

10
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insertion of extensor digiti minimi

extensor expansion of little finger

11
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innervation of extensor digiti minimi

deep branch of radial nerve

12
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action of extensor digiti minimi

extends metacarpal phalangeal joint of little finger

13
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origin of extensor carpi ulnaris

lateral epicondyle of humerus

14
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insertion of extensor carpi ulnaris

base of 5th metacarpal bone

15
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innervation of extensor carpi ulnaris

deep branch of radial nerve

16
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action of extensor carpi ulnaris

extends and adducts hand at wrist joint

17
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origin of anconeus

lateral epicondyle of humerus

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insertion of anconeus

lateral surface of olecranon process of ulna

19
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innervation of anconeus

radial nerve

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action of anconeus

extends elbow joint

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origin of supinator

lateral epicondyle of humerus, annular ligament of proximal radioulnar joint, and ulna

22
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insertion of supinator

neck and shaft of radius

23
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innervation of supinator

deep branch of radial nerve

24
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action of supinator

supination of forearm

25
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origin of abductor pollicis longus

posterior surface of shafts of radius and ulna

26
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insertion of abductor pollicis longus

base of 1st metacarpal bone

27
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innervation of abductor pollicis longus

deep branch of radial nerve

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action of abductor pollicis longus

abductors and extends thumb

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origin of extensor pollicis brevis

posterior surface of shafts of radius

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insertion of extensor pollicis brevis

base of proximal phalanx of thumb

31
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innervation of extensor pollicis brevis

deep branch of radial nerve

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action of extensor pollicis brevis

extends of metacarpophalangeal joints of thumb

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origin of extensor pollicis longus

posterior surface of shafts of ulna

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insertion of extensor pollicis longus

base of distal phalanx of thumb

35
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innervation of extensor pollicis longus

deep branch of radial nerve

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action of extensor pollicis longus

extends distal phalanx of thumb

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origin of extensor indicis

posterior surface of shafts of ulna

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insertion of extensor indicis

extensor expansion of index finger

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innervation of extensor indicis

deep branch of radial nerve

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action of extensor indicis

extends metacarpophalangeal joint of index finger