Supination of forearm with elbow extended – Anatomy MCQ

Supination of forearm with the elbow extended is brought about mainly by?
A. Biceps brachii
B. Supinator
C. Brachioradialis
D. Brachialis

Correct answer : B. Supinator

Muscles of forearm – posterior aspect – Supinator is highlighted

Supinators of the forearm are:

Biceps brachii (Involved in rapid supination with elbow flexed and supination against resistance.)
Supinator (Mainly concerned with slow supination with elbow extended.)

Ref: B.D. Chaurasia’s Human Anatomy, 4th Edition, Vol 1, p151.

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