What is meant by "excretion"? What are the various waste materials excreted from the human body? Why is it necessary to excrete waste products?
Important Questions on Excretory System
Picture based question
Identify the organ and label its different parts.
There is a pair of bean—shaped organs P in the human body towards the back, just above the waist. A waste product Q formed by the decomposition of unused proteins in the liver is brought into organs P through blood. The numerous tiny filters R present inside the organs P clean the dirty blood by removing the waste product Q. If due to some reason. The organs P of a person stop functioning completely, the person's blood can be cleaned periodically by a process S so as to save his life. What are P, Q, R and S?
Solve the crossword puzzle.
Across:
3. It is a muscular bag situated in the lower abdomen
4. It is removed from the blood by kidneys
6. The removal of waste materials produced in the cells
7. It is called the process of removing carbon dioxide from the body
8. The procedure used for cleaning the blood of a person
Down:
1. Tiny blood filters in our body
2. Solid deposits that occur in the urinary system
5. It is attached to the renal artery
9. It produces bile pigments from haemoglobin
10. It contains water, some salt and a little of urea
