Question

multiple choice question
which actions are provided by contraction of the biceps brachii?
flexion of the forearm
extension of the forearm
pronation of the forearm
supination of the forearm

Explanation:

The biceps brachii muscle is responsible for flexing the forearm at the elbow joint and also participates in supination of the forearm. It does not cause extension or pronation of the forearm.

Answer:

A. Flexion of the forearm
D. Supination of the forearm