Why does excretion take place?

Answer 1

Excretion is the process of eliminating waste products of metabolism and other non-useful materials. It is an essential process in all forms of life. In humans, the excretory processes are the formation of urine in the kidneys and the formation of carbon dioxide (a human's abundant metabolic waste) molecules as a result of respiration, which is then exhaled from the lungs. These waste products are eliminated by urination and exhalation respectively. In urination, hormonal control over excretion occurs in the distal tubules of the kidneys as directed by the hypothalamus. In humans the main organs of excretion are the kidneys and accessory urinary organs, through which urine is eliminated, and the large intestines, from which solid wastes are expelled. In strict biological terminology, the expulsion of feces is not considered to be excretion, since feces is indigestible food, and not metabolic waste. The skin and lungs also have excretory functions: the skin eliminates metabolic wastes like urea and lactic acid through sweating, and the lungs expel carbon dioxide.

Answer 2

To remove the toxins extracted from the food/nutrients our bodies absorb. If we were not able to excrete these, our bodies would become poisoned.

This is why it is so important to use the toilet when yo need to and not 'hold it in.'

Answer 3

Excretion is important because your body generates waste products. If they build up in the cells, they can cause cell death. Therefore, eliminating waste products helps keep your body healthy and working properly.

Another important aspect about excretion is eliminating substances which are more than the amount the body needs. Since the dose makes the poison, getting rid of them prevents cell death.

Answer 4

To keep homeostasis. In other words to keep the inside of the body balanced

Answer 5

Without excretion ingestion would be pointless. We may as well Ask "Why is Ingestion Necessary?"

Answer 6

To get rid from toxins