Question

The prime mover of elbow flexion is biceps brachii.

Answer 1

The prime mover of the elbow flexion is biceps brachii. (True)

What is biceps brachii?

On the ventral side of the upper arm, the biceps brachii is a sizable, thick muscle. The muscle is made up of a long head (caput longum) and a short head (caput breve).

The coracoid process at its tip is where the short head begins, and the supraglenoid tubercle (also known as the tuberculum supraglenoidale) of the glenoid/scapula is where the long head begins.

Both heads run distally, converge into a muscle belly, and then taper across the front of the elbow before inserting via the bicipital aponeurosis onto the radial tuberosity and the forearm fascia. The triceps brachii muscle opposes the biceps muscle.

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