(ii) (a) Define excretion. Write the important functions of the structural and functional unit of
the kidney
(b) Write any two functions of artificial kidney.
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The structural and functional unit of kidney is nephron. The chief functions of nephron are to purifying blood, reabsorption of water and urine formation. Artificial kidney functions in the same way as natural human kidney. The function of artificial kidney is to purify blood
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Explanation:
a) Excretion is a process in 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.
The structural and functional unit of kidney is nephron. The chief functions of nephron are to purifying blood, reabsorption of water and urine formation. Artificial kidney functions in the same way as natural human kidney. The function of artificial kidney is to purify blood.
b)The function of Artificial Kidney: Helps to remove harmful wastes, extra salts and water, control blood pressure. Maintain the balance of sodium potassium salts in a patient whose kidneys have failed.
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