It pierces the coracobrachialis muscle and gives off branches to the muscle, as well as to brachialis and biceps brachii.
The bicipital aponeurosis originates from the distal insertion of the biceps brachii.
When pronated, the brachioradialis is more active during elbow flexion since the biceps brachii is in a mechanical disadvantage.
The nerve may pass under the coracobrachialis or through the biceps brachii. 4.
It lies deeper than the biceps brachii, and is a synergist that assists the biceps brachii in flexing at the elbow.
The barbell curl specifically targets the biceps brachii which is located on the front part of the arm between the shoulder and the elbow.
It also supplies coracobrachialis, biceps brachii, brachialis, and the forearm skin close to the insertion of each of those muscles.
The triceps brachii and anconeus extend the elbow, and attach to the posterior side of the humerus.
