| UNIT 5: Excretion and Homeostasis |
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Specific Objectives
Students should be able to:
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Explanatory notes
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1
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Explain the importance of excretion in human beings;
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Include definition of excretion.
(Lnk to Specific Objective B1.27)
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2
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explain the roles of the organs involved in excretion;
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Lungs, skin and kidney;
examples of metabolic waste
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3
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relate the structures of the kidney to their functions; |
internal structure of the kidney (diagram required),
structure and function of the nephron (diagram required);
selective reabsorption of substances;
composition of urine,
mention renal dialysis.
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4
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relate the structures of the skin to their functions; |
diagram required.
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| 5. |
explain the concept of homeostasis; |
Definition of homeostasis; examples of homeostasis.
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| 6. |
explain the concept of feedback mechanisms; |
Include regulation of carbon dioxide(CO2)
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| 7. |
describe the regulation of blood sugar;
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Role of insulin and glucagon.
(Link to Specific Objective D6)
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| 8. |
explain the regulation of water; |
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| 9. |
distinguish between heat and temperature; |
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| 10. |
describe the regulation of temperature. |
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