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What is Which of the following is true regarding total heat production during a muscle contraction? and explain in detail?
Activation heat is the heat that muscle produces whenever it contracts. Heat Production in Muscle Resting Heat: The heat given off at rest due to the basal metabolic processes . Initial Heat: The heat produced in excess of resting heat during contraction. It is made up of two subtypes: Activation Heat: The heat that muscle produces whenever it is contracting, and Shoening Heat: The heat which is propoional in amount to the distance the muscle shoens. Shoening heat is apparently due to some change in the structure of the muscle during shoening. Recovery Heat: This is the heat liberated by the metabolic proccesses that restore the muscle to its precontraction state. The recovery heat of muscle is approximately equal to the initial heat. Relaxation Heat: Heat released in a muscle that has contracted isotonically to restore it to its previous length. This extra heat is in addition to recovery heat. Ref: Ganong&;s Review of Medical Physiology 25th edition Pgno: 109-110