5
Question
How does excretion occur in human beings?
How does excretion occur in human beings?
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Solution
Excretion:
- The process of removal of waste materials from the body is called excretion.
- Kidney is the major excretory organ in human beings.
- It excretes nitrogenous waste materials like urea, and uric acid, along with salt and water.
- The impure blood enters the glomerulus to filter out the nitrogenous substances.
- It then passes through the renal tubules so that the useful substances can get reabsorbed.
- Finally the impurities along with water produce the urine.
- Apart from this, the solid undigested food is excreted by the large intestine.
- Excess water is lost as sweat through the skin while carbon dioxide and water vapour are excreted by the lungs.
Excretion:
- The process of removal of waste materials from the body is called excretion.
- Kidney is the major excretory organ in human beings.
- It excretes nitrogenous waste materials like urea, and uric acid, along with salt and water.
- The impure blood enters the glomerulus to filter out the nitrogenous substances.
- It then passes through the renal tubules so that the useful substances can get reabsorbed.
- Finally the impurities along with water produce the urine.
- Apart from this, the solid undigested food is excreted by the large intestine.
- Excess water is lost as sweat through the skin while carbon dioxide and water vapour are excreted by the lungs.
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