Question

Thermoregulatory center of the human body is
A. Pituitary
B. Skin
C. Hypothalamus
D. Thyroid

Answer 1

Hint: The temperature of the body is maintained by a part of the brain.

Complete answer:
When body heat is generated mostly in the deep organs and humans can adapt to a great diversity of climates, including hot humid and hot arid is called thermoregulation in humans.
The temperature of humans is regulated and stabilized primarily by the hypothalamus.

Additional information
- Hypothalamus is a region of a brain linking the endocrine system to the nervous system.
- Hypothalamus maintains the constant body temperature by regulation of the diameter of blood vessels, and sweating mechanisms.
- As core temperature changes, the endocrine production initiates control mechanisms to increase or decrease energy production as needed to return to temperature.
- In hot conditions, endocrine sweat glands secrete sweat under the skin which travels up the sweat duct, through the sweat pore and onto the surface of the skin. This causes heat loss.
- In hot and humid conditions, effective thermoregulation is reduced. In such conditions, light cotton clothes are best to wear as they absorb sweat but minimize the gain of radiant heat.
- In cold conditions, heat is lost through hands and feet, and sweat production is decreased.

So, the correct answer is Hypothalamus.

Note: The sweat glands present in skin help lower the heat during summers by evaporation of water on the skin surface, thereby cooling the skin surface. Skin does not contain any thermoregulatory centers but only exhibits sweating as a mechanism of temperature regulation.