APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -In a bicep curl the bicep is the agonist on the way up when it contracts concentrically, and on the way down when it contracts eccentrically. This is because it is the prime mover in both cases. 2. Antagonist: The antagonist in a movement refers to the muscles that oppose the agonist.

Detailed explanation-2: -Flexion – bending a joint. This occurs when the angle of a joint decreases. For example, the elbow flexes when performing a biceps curl.

Detailed explanation-3: -Concentric contraction occurs when the total length of the muscle shortens as tension is produced. For example, the upward phase of a biceps curl is a concentric contraction.

Detailed explanation-4: -When we flex the elbow, the biceps is the agonist because is causes the elbow to flex. The triceps is the antagonist because it is on the opposite side of the elbow joint and has the potential to oppose the elbow flexion.