Question

Give biological reasons for the following statements:
There is more frequent urination in winter than in summer.

Answer 1

Urination is the process by which urine is a release from the urinary bladder through the urethra to the outside of the body. Frequent urination means that person is passing urine very frequently without having many gaps. In winter the temperature is low as compared to summer. Kidneys are responsible for producing urine as a way to filter out waste from the body.

Complete answer:
- Urine, stool, breath, and perspiration are the various ways by which the fluid or liquid is flushed out of the body.
- In summers, the temperature of the body is high, so a large amount of water is lost from the body by the means of perspiration. That's why less water is flushed out from the body through urine.
- During winter, the temperature is low and there is very little perspiration.
- So, maximum water is flushed out through urine in winter.
- In the winter season, the body needs to filter more blood than normal because blood is moving to the vital organs at a higher frequency.
- More urination in winter is completely normal. This condition is called cold diuresis.

Additional information:
- On a normal day's temperature, the body will usually produce about one to two quarts of urine.
- In cold weather when the body is exposed to the cold to get from one place to another or to take part in cold weather activities, blood vessels constrict naturally.
- This occurs so that the body can direct blood flow to vital organs.
- Frequent urination can also occur due to an excessive intake of water.

Note: Urination is a process of passing waste fluid in the form of urine from the body. In winter there is frequent urination than in summer this is due to the reason that in winter temperature is low and less perspiration occurs so, most of the water is passed out by urine. Whereas in summers, the temperature is high so the maximum water loss occurs by perspiration and less water is flushed out by the urine. That's why there is frequent urination in winters than in summer.