Biology
The figure given ahead is an organ system of humans. Study the same and answer the following questions.
(a) Identify the organ system.
(b) Label the guidelines 1 to 7.
(c) Write one important role of parts 3 and 6.
(d) Name the cells of part 1 that produce testosterone.
(e) What is the significance of the part 1 being located in a separate sac suspended outside the body ?
Reproductive System
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Answer
(a) Male Reproductive Organ System
(b)
- 1 → Testes
- 2 → Scrotal sac
- 3 → Epididymis
- 4 → Sperm duct
- 5 → Seminal vesicle
- 6 → Bulbo-Urethral Gland
- 7 → Urethra
(c) Part 3 (Epididymis) — It stores the sperms for some days during which they mature and become motile.
Part 6 (Bulbo-Urethral Gland) — Their secretion serves as a lubricant.
(d) Leydig cells
(e) The normal body temperature does not allow the maturation of the sperms. Being suspended outside the body cavity, the temperature in the scrotal sac is 2 to 3°C lower than that of the body which is the suitable temperature for the maturation of the sperms.
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Related Questions
The figure given below is an important gonad of humans. Study the figure and answer the following questions.
(a) Identify the organ. Write its specific location in the body.
(b) Label the parts shown in the figure as 1 to 4.
(c) Write important functions of parts 2 and 4.
(d) Name one cellular structure and one hormone which are produced in part 3.
(e) Draw a neat and labelled diagram of the cellular structure mentioned by you in (d).
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 and 6.
(d) What will happen if the part 3 on both sides gets blocked?
The diagram below is that of a developing human foetus in the womb. Study the same and answer the questions that follow:
(a) Name the parts '1' to '5' indicated by guidelines.
(b) What term is given to the period of development of the foetus in the womb?
(c) How many days does the foetus take to be fully developed?
(d) Mention two functions of the parts labelled '2' other than its endocrine functions.
(e) Name any one hormone produced by the part labelled '2'.
Given below is the outline of the male reproductive system. Name the parts labelled 1 to 8. Also name the corresponding structure of part (4) in the female reproductive system.
