Please enable JavaScript.
Coggle requires JavaScript to display documents.
Forearm Extensors (Deep (Supinator (O: 2 Heads - Lateral Epicondyle &…
Forearm Extensors
Deep
Supinator
O:
2 Heads - Lateral Epicondyle & Posterior Surface of Ulna
I:
Posterior Surface of Radius
A:
Supinates forearm
Deep Branch of Radial N. (C7-C8)
Index Finger
Extensor
INDICIS
O:
Posterior surface of distal 1/3 of Ulna + Interosseous Membrane
I:
Extensor Expansion of 2nd Digit
A:
Extend 2nd digit (independent) + helps extend hand at wrist
Posterior Interosseous N. (C7-C8): Continuation of Deep Branch of Radial N.
Thumb
Abductor
POLLICIS
Longus (APL)
O:
Posterior Surface of Proximal halves of Ulna, Radius, & Interosseous Membrane
I:
Base of 1st Metacarpal
A:
Abducts thumb & Extends at CMC joint
Posterior Interosseous N. (C7-C8): Continuation of Deep Branch of Radial N.
Extensor
POLLICIS
Brevis (EPB)
O:
Posterior Surface of Distal 1/3 of Ulna + Interosseous Membrane
I:
Base of
PROXIMAL
Phalanx of thumb - Dorsal Aspect
A:
Extends proximal phalanx of thumb at MCP joint & Extends CMC joint
Posterior Interosseous N. (C7-C8): Continuation of Deep Branch of Radial N.
Extensor
POLLICIS
Longus (EPL)
O:
Posterior Surface of Middle 1/3 of Ulna + Interosseous Membrane
I:
Base of
DISTAL
phalanx of thumb - Dorsal Aspect
A:
Extends distal phalanx of thumb at IP joint + Extends MCP * CMC joints
Posterior Interosseous N. (C7-C8): Continuation of Deep Branch of Radial N.
Superficial
Lateral Epicondyle: Common Extensor Tendon
EXTENSOR
Carpi Radialis Brevis (ECRB)
O:
Lateral Epicondyle
I:
Base of
3RD METACARPAL
- Dorsal Aspect
A:
Extends & Abducts the wrist
Deep Branch of Radial N. (C7-C8)
EXTENSOR
Digitorum
O:
Lateral Epicondyle
I:
Extensor Expansions of Medial
4 DIGITS (2-5)
A:
Extends medial 4 fingers at MCP & IP joints
Deep Branch of Radial N. (C7-C8)
EXTENSOR
Digiti Minimi
O:
Lateral Epicondyle
I:
Extensor Expansion of
5TH DIGIT
A:
Extends 5th digit at MCP joint; secondarily to IP joint
Deep Branch of Radial N. (C7-C8)
EXTENSOR
Carpi Ulnaris (ECU)
O:
Lateral Epicondyle
I:
Base of
5TH METACARPAL
A:
Extends & Adducts the wrist
Deep Branch of Radial N. (C7-C8)
Lateral Supracondylar Ridge
Brachioradialis
I:
Distal end of Radius, just before Radial Styloid Process
A:
Flexes at the elbow
Radial N. (C5-C7)
O:
Lateral Supracondylar Ridge
Extensor Carpi Radialis Longus (ECRL)
O:
Lateral Supracondylar Ridge
I:
Base of
2ND METACARPAL
- Dorsal Aspect
A:
Extends & Abducts the wrist:
Radial N. (C6-C7)