MEDICAL PHYSIOLOGY

Detailed explanation-1: -Muscle tone is defined as the continuous and passive-partial contraction of the muscle or the muscle’s resistance to passive stretch during the resting state.

Detailed explanation-2: -Muscle tone is the maintenance of partial contraction of a muscle, important for generating reflexes, maintaining posture and balance, and controlling proper function of other organ systems. Tone is controlled by the sensory muscle spindle, which measures muscle stretch.

Detailed explanation-3: -Muscle tone can be classified as ‘postural’ and ‘phasic’ types. Postural tone is seen in axial muscles where gravity is the most important inciting factor. It results from a steady stretch on the muscles and tendons and manifests as prolonged muscle contraction.

Detailed explanation-4: -This phenomenon of sustained contraction is called tetany. The length-tension relationship in muscle illustrates the tensions, or forces, produced from the cross-bridge cycle as a result of changes in muscle fiber length.