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प्रश्न
Given below is a diagram of the lateral section of the testis of a man. Study the same and answer the questions that follow:
(i) Label the parts numbered 1 to 4 of the diagram.
(ii) State the functions of the parts labeled 1 and 3.
(iii)What is the significance of the testes being located in the scrotal sac outside the abdomen?
(vi)What is the role played by the inguinal canal?
(v) What is semen?
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उत्तर
(i)
1. Seminiferous tubules
2. Testicular lobule
3. Epididymis
4. Vas deferens
(ii)
1. Seminiferous tubules: sperm production, nourishment, and protection of sperm.
3. Epididymis: stores sperm, contributes to seminal fluid.
(iii) The scrotal sac acts as a thermoregulator. The temperature in the scrotal sac remains 2-3°C lower than the body temperature which is suitable for the maturation of sperm.
(iv) Through the inguinal canal, the sperm duct is connected and so passes the sperm to the urinary bladder.
(v) Semen is a mixture of mature sperm and secretions of’ various accessory glands. It is a milky fluid.
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संबंधित प्रश्न
What are the major components of seminal plasma?
Give appropriate biological/technical terms for the following:
The accessory gland in human males whose secretion activates the
sperms.
Fill in the blank:
Male gemetes are produced inside _______.
What differences are there in number, structure, and activity of the male and female gametes in a man?
Write the functions of penis
Write the answers to the questions by observing the figure.
- What does the above figure show?
- Write the names of parts A, B, C, D.
- Write the function of the part 'D'.
- How is semen formed?
The spermatozoa from seminiferous tubules pass into ______.
In human males, the testes lie in the scrotum, because it helps in the
What is the significance of epididymis in male fertility?
Give reason: Testes are located outside the body cavity in scrotal sacs.
