Q2 of 63 Page 154

Is it correct to say that the testes produce testosterone. Discuss?

Testosterone is the male reproductive hormone produced by the interstitial cells or the Leydig cells. These cells are located in the testes. They serve as a packing tissue between the coils of the seminiferous tubules. Therefore, it can be said that the testes produce the male hormone testosterone.


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9

Differentiate between the following pairs:

Efferent duct and sperm duct.

 1

What is the significance of the testes being located in scrotal sacs outside the abdomen?

Can there be any abnormal situation regarding their location? If so, what is that and what is the harm caused due to it?

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Suppose a normal woman has never borne a child. How many mature eggs would she have produced in her lifetime? Your calculation should be based on two clues-

(a) Eggs are produced at the rate of 1 egg every 28 days (one menstrual cycle).


(b) A woman’s total reproductive period is 13-45 years.

 1

Given below is a diagram of two systems together in the human body.


(a) Name the systems.


(b) Name the parts numbered 1-10.


(c) Describe the functions of the parts 3,4,5 & 6.