MEDICAL PHYSIOLOGY

Detailed explanation-1: -There are 2 types of isotonic contractions: concentric and eccentric. 5. In a concentric contraction, the muscle tension rises to meet the resistance then remains stable as the muscle shortens. During eccentric contraction, the muscle lengthens as the resistance becomes greater than the force the muscle is producing.

Detailed explanation-2: -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-3: -In the isotonic system, the muscle shortens against a fixed load, which is illustrated in the top panel of the figure, showing a muscle lifting a weight. The characteristics of isotonic contraction depend on the load against which the muscle contracts, as well as the inertia of the load.

Detailed explanation-4: -concentric: An isotonic contraction where the muscle shortens.