Question

which of the following is not a mechanism to increase body temperature? (1).increased metabolism. (2). vaso dilation. (3).shivering. (4). pilo erection ​

Answer 1

increased metabolism

Answer 2

The correct answer is option (1) increased metabolism.

Increased metabolism - It is the result of temperature. If a body is kept at lower temperature, it starts generating more heat. Metabolism is active and maintained every moment, where as the other three mechanisms are specially activated to increase body temperature.

Vasodilation - Vasodilation is the widening of blood vessels and this results in increased blood flow in the vessels and hence the loss of heat from body is increased, as happens during exercise. So, the temperature is regulated here by loss of heat.

Shivering - When the body temperature falls below a certain level, shivering in the body begins as a reflex action in order to generate heat and maintain body temperature.

Pilo erection - when the body temperature falls below a certain level, then goosebumps occur or hair stand, this helps to maintain body temperature and relaxes the muscles, which increases the blood flow in the body. However, this is not very much significant in human body.