Explain the role of the following in thermoregulation in humans:(i) Sweat glands(ii) Skeletal muscles(iii) Blood vessels in the skin
Answers
As in other mammals, thermoregulation in humans is an important aspect of homeostasis. In thermoregulation, body heat is generated mostly in the deep organs, especially the liver, brain, and heart, and in contraction of skeletal muscles.[1] Humans have been able to adapt to a great diversity of climates, including hot humid and hot arid. High temperatures pose serious stress for the human body, placing it in great danger of injury or even death. For humans, adaptation to varying climatic conditions includes both physiological mechanisms resulting from evolution and behavioural mechanisms resulting from conscious cultural adaptations.[2][3]
The role of the following in thermoregulation in humans is as follows:
(i) Sweat glands
At the point when inner temperature rises, the eccrine organs which is also called sweat gland emit water to the skin surface, where through evaporation heat is released out of the body.
(ii) Skeletal muscles
The skeletal muscles contract and unwind in low temperatures which produce heat from the contact brought about by the muscles; heat is additionally made from metabolic responses like breathing.
(iii) Blood vessels in the skin
Blood vessels can widen and contract to control body temperature. At the point when body temperature is excessively low, the modest veins close to the outside of the skin. This reduces the blood stream close to the outside of the skin so less warmth is lost through radiation.