In Extending the Elbow,the

Question

In extending the elbow,the
A) triceps brachii is the prime mover
B) biceps brachii is the prime mover
C) brachialis is the prime mover
D) triceps brachii is the antagonist

Accepted Answer

The triceps brachii is the primary muscle responsible for extending the elbow, making choice A the correct answer. The biceps brachii is responsible for flexing the elbow, and the brachialis also assists in elbow flexion. Triceps brachii cannot be the antagonist as it is the primary muscle responsible for extending the elbow.