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Question
Given below is the outline of the male reproductive system.
(i) Name the parts labeled 1 to 5.
(ii) State the functions of the parts labeled 1 and 4.
(iii) Name the cells of part 5 that produce testosterone.
(iv) Why is structure 5 present outside the body in the scrotal sacs?
(v) What is semen?
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Solution
(i)
1. Prostate gland.
2. Cowper’s gland.
3. Urethra.
4. Sperm duct.
5. Testis.
(ii)
1. Prostate gland: it secretes an alkaline matter which neutralizes the acidity of urethra.
4. Sperm duct: It carries sperms from epididymis to the urethra.
(iii) Cells of Leydig.
(iv) The testis is located in the scrotal sacs so that they can maintain a low temperature than the body cavity. This low temperature is necessary for the maturation of sperms.
(v) Semen is the mixture of sperm and secretions of the seminal vesicles, prostate gland, and Cowper's gland.
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The figure given below is an important gonad of humans. Study the figure and answer the following questions.
 |
- Identify the organ. Write its specific location in the body.
- Label the parts shown in the figure as 1 to 4.
- Write important functions of parts 2 and 4.
- Name one cellular structure and one hormone which are produced in part 3.
- Draw a neat and labelled diagram of the cellular structure mentioned by you in (d).
