3.1.1 explain the meaning of excretion.
Excretion in mammals.
Brainstorm to bring out the meaning of excretion.
discuss to bring out the differences between excretion and egestion.
Distinguish between excretion and egestion in humans.
3.1.2 identify organs of the excretory system and their products in mammals.
discuss the main organs of excretory system (lungs, skin, liver and kidneys) and match them against their products
NOTE:
1. Excretory products of liver should include bile pigment, urea and cholesterol.
2. Discussion to include:
i. Structure of the skin and kidneys (Structure of nephron not required)
ii. How the products of excretion (sweat and urine) are eliminated from the body after their formation.
iii. Excretory product of liver should include bile, cholesterol and pigment.
1. Excretory products of liver should include bile pigment, urea and cholesterol.
2. Discussion to include:
i. Structure of the skin and kidneys (Structure of nephron not required)
ii. How the products of excretion (sweat and urine) are eliminated from the body after their formation.
iii. Excretory product of liver should include bile, cholesterol and pigment.
List three excretory organs and their respective products.
3.1.3 mention some disorders of the urinary system in humans and their remedies.
Discuss the disorders of the human urinary system e.g. bed wetting, urine retention, kidney stones and their remedies.
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