a) The diagram below shows the excretory system of a human being. Study the same and then answer the questions that follow.
i) Name the parts labelled 1, 2, 3 and 4.
ii) Give the main function of the parts labelled 5, 6, 7 and 8.
iii) Name the endocrine gland which could be added in the diagram and state its location/position.

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Solution

i) 1- Posterior Vena Cava, 2- Aorta, 3. Renal artery, 4. Renal Vein
ii) Part 5 - Ureter carries urine from kidneys to the urinary bladder.
Part 6 - Urinary bladder contains the urine until it is released out.
Part 7 - Sphincter muscles guards the urethra.
Part 8 - Urethra is the passage through which urine is given out of the body.
iii) The adrenal gland is located above each kidney in the form of a cap.

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