Question

Which of the following statements accurately describes a characteristic of all elbow flexors?

A. They are primarily responsible for extending the elbow joint.
B. They are innervated by the sciatic nerve.
C. They all originate from the scapula.
D. They decrease the angle between the forearm and upper arm.

Answer 1

Elbow flexors such as the biceps brachii, brachialis, and brachioradialis decrease the angle between the forearm and upper arm, which is their primary function.

Step-by-step explanation:

The characteristic that accurately describes all elbow flexors is that they decrease the angle between the forearm and the upper arm. The forearm flexors such as the biceps brachii, brachialis, and brachioradialis work to flex the forearm, bringing it closer to the upper arm. This action directly opposes elbow extensors like the triceps brachii and anconeus, which serve to increase the angle at the elbow joint. Additionally, elbow flexors are part of an inherent muscular system that includes pronation and supination of the forearm.