The muscles that initiate flexion at the elbow joint (biceps brachii and brachialis) are innervated by what nerve from the lateral cord?
A) radial
B) median
C) ulnar
D) musculocutaneous

Question

Quizplus · Accepted Answer

The musculocutaneous nerve from the lateral cord innervates the biceps brachii and brachialis muscles, which are responsible for flexion at the elbow joint. The radial nerve innervates extensor muscles, while the median and ulnar nerves innervate muscles in the forearm and hand.

The Muscles That Initiate Flexion at the Elbow Joint (Biceps