BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Shivering-nerve impulses are sent by the hypothalamus to the skeletal muscles to bring about rapid contractions that generate heat. Shivering therefore helps raise the body temperature. Increase in metabolic rate-the liver produces extra heat in order to raise the temperature of the body.

Detailed explanation-2: -When the air is super cold, it will take away your body heat, leaving you feeling – you guessed it – cold! As part of the process of homeostasis, shivering is one way that your body tries to produce more warmth and make up for all the heat it’s losing to the cold air.

Detailed explanation-3: -Shivering is a remarkable thermogenic response in homeothermic animals, including humans, that involves rapid, repeated skeletal muscle contractions leading to heat production through the inefficiency of ATP utilization (Jubrias et al.

Detailed explanation-4: -As the environment warms-up, the body tends to warm-up as well. The body’s internal “thermostat” maintains a constant inner body temperature by pumping more blood to the skin and by increasing sweat production. In this way, the body increases the rate of heat loss to balance the heat burden.

Detailed explanation-5: -The muscle contractions of shivering release heat while using ATP. The brain also triggers the thyroid gland in the endocrine system to release thyroid hormone, which increases metabolic activity and heat production in cells throughout the body. Figure 2. Physiological response to acute cold exposure.