The Primary Action of the Triceps Brachii is ________

Question

The primary action of the triceps brachii is ________.
A) pronation of the forearm
B) flexion of the fingers
C) flexion of the forearm
D) extension of the forearm

Accepted Answer

The primary action of the triceps brachii is extension of the forearm. It works opposite to the biceps brachii, which causes flexion of the forearm.