Question

why more urine is produced during winter

Answer 1

During summer when the surrounding temperature is high, we lose water in the form of sweat, direct evaporation considerably. Hence kidneys retain water for maintaining fluidity of the blood and less urine is formed. 

 But during winter, the surrounding temperature will be very low. There will not be any sweating, no evaporation losses. Moreover to keep the body temperature constant, the blood capillaries in the skin get constricted and the blood pressure is increased. The result is that our body gets warmed up. In order to maintain the blood pressure normal, the excess water along with the wastes is excreted mostly in the form of urine. This is the reason for more urine out put and frequent urination under very cool conditions and in winter.

Answer 2

The reason for production of more urine during the winter:

Explanation:

• During summer when the temperature is high,the body loose water in the form of sweat through direct evaporation. This avails the kidney to store a considerable amount of water and forms less urine.
• But during winter season, the external temperature will be low. There will be no sweat production due to cool environment. To keep the body constant, the blood capillaries become constricted and blood pressure is increased. The kidney discharges more amount of waste in the form of urine hence, more urine is secreted.

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