W Answer in a word or sentence:
1. State the meaning of the term 'excretion'
2. The process of excretion is important,
3. Mention the organs involved in the
is used for the
Why?
excretory system of humans.
Answers
Answer:
1) Excretion is a process by which metabolic waste is eliminated from an organism. In vertebrates this is primarily carried out by the lungs, kidneys and skin. This is in contrast with secretion, where the substance may have specific tasks after leaving the cell. Excretion is an essential process in all forms of life.
2)Excretion is very important as if excretion is not done and if wastes are left to accumulate in the blood after a certain level , the organism may die because urea and other wastes are poisonous. It helps us to prevent diseases. It maintains proper balance of nutrients in the body
3) Human excretory system includes organs that facilitate the removal of nitrogenous wastes from the body. The main excretory organs include kidney, ureter, urinary bladder and urethra. Kidneys filter the blood and urine is the filtrate obtained.
Answer:
To expel or excrete waste out of body
It's important otherwise the all waste substances will remain in body and make our body worst
Kidney Lungs liver Large intestine Skin
Kidney excrete body waste into urine
Lungs excrete gaseous substances
Skin excrete excess salt and mineral in form of sweat