MICROANATOMY

Detailed explanation-1: -Types of Muscle Contraction: An isotonic concentric contraction results in the muscle shortening, an isotonic eccentric contraction results in the muscle lengthening. During an isometric contraction the muscle is under tension but neither shortens nor lengthens.

Detailed explanation-2: -During an isometric contraction the muscle is under tension but neither shortens nor lengthens.

Detailed explanation-3: -Isometric Muscle Action (Isometric Contraction) Actually, it is not muscle length, but joint angle which remains constant. Contraction means “shortening, ‘’ so that isometric contraction, like all other forms of muscle contraction, involves internal movement processes which shorten the muscle fibres.