Question

During a bicep curl exercise, which joint actions primarily occur at the elbow joint?

1) Flexion and extension
2) Abduction and adduction
3) Rotation
4) Pronation and supination

Answer 1

The primary joint actions at the elbow joint during a bicep curl are flexion and extension, with the muscles biceps brachii, brachialis, brachioradialis, triceps brachii, and anconeus contributing to the movement (1).

Step-by-step explanation:

During a bicep curl exercise, the primary joint actions that occur at the elbow joint are flexion and extension. Flexion is when the angle between the forearm and the upper arm decreases as the biceps brachii, brachialis, and brachioradialis contract.

Extension is the opposite movement where the angle increases, straightening the elbow as the triceps brachii and anconeus contract. These muscle contractions facilitate the bending and straightening of the elbow, crucial for the bicep curl motion.