Question

Contraction of the triceps will create the motion opposite to that caused by the biceps brachii; the triceps acts as an ________of the arm at the elbow.

Answer 1

The triceps acts as an extensor of the arm at the elbow.

Step-by-step explanation:

The contraction of the triceps creates the motion opposite to that caused by the biceps brachii. The triceps acts as an extensor of the arm at the elbow. When the biceps contract, they flex the forearm and assist in supinating it, while the triceps contract to extend or straighten the arm. These muscles work together to allow movement of the arm.