Question

Identify the action of the highlighted muscle.

1) Flexion of the forearm
2) Extension of the forearm
3) Adduction of the forearm
4) Abduction of the forearm

Answer 1

The action of the highlighted muscle is flexion of the forearm, mainly performed by the biceps brachii along with other forearm flexors. So, the correct option is 1) flexion of the forearm.

Step-by-step explanation:

The highlighted muscle responsible for the action of flexion of the forearm is likely to be one of the forearm flexors, such as the biceps brachii, brachialis, or brachioradialis. Among these muscles, the biceps brachii is particularly prominent in its role. Originating from the scapula and inserting into the radius, the biceps brachii is a biarticular muscle that not only flexes the forearm but also contributes to the supination of the forearm. This means that it assists in turning the palm upward. The coordinated action of these muscles allows for the intricate and essential movement of bending the elbow and bringing the forearm toward the upper arm. So, the correct option is 1) flexion of the forearm.