NURSING ANM AND GNM

Detailed explanation-1: -Five phenotypic adaptations may be described: reduced heart rate at a fixed work rate; expanded plasma volume; lower core temperature at an equivalent workload; supe-rior sodium and chloride reabsorption from sweat; and an elevated sweat secretion.

Detailed explanation-2: -Shivering thermogenesis is a response to sudden exposure to cold and is a major contributor to enhanced heat production. Nonshivering thermogenesis is also induced by exposure to cold and is the mechanism by which heat is produced by the calorigenic effect of epinephrine and norepinephrine.