Q43 Extensor Carpi Radialis Longus

Question 1

Give the position of this muscle

Answer 1

A superficial muscle in the posterior compartment on the lateral side of the forearm

Question 2

State the attachments of this muscle

Answer 2

Proximal attachment- lower third of supracondylar ridge of the humerus, lateral epicondyle via CET, intramuscular septum. Distal attachment- dorsal (posterior) aspect of the base of the second metacarpal

Question 3

Name the actions of this muscle at the wrist region

Answer 3

Extension and abduction (Radial deviation) weak assister to elbow flexion

Question 4

Name the nerve that supply’s this muscle

Answer 4

Radial nerve C6

Question 5

Name the muscles that work together with the ECRL

Answer 5

Extensor Carpi Radials Brevis to produce extension and abduction
Extensor Carpi Ulnaris to produce extension
Flexor Carpi Radialis to produce abduction of the wrist

Question 6

Give one functional activity in which the muscle has an important role

Answer 6

Wrist extension phase of Gripping, Hammering, Chopping