Biology
Given below is the schematic diagram of the sectional view of the human male reproductive system.
(a) Name the parts numbered 1-11.
(b) State the functions of the parts numbered 1, 2, 3, 5, 8 and 11.
Reproductive System
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Answer
(a) The parts numbered 1-11 are:
- 1 → Seminal vesicle
- 2 → Prostate gland
- 3 → Bulbo-urethral glands
- 4 → Epididymis
- 5 → Testis
- 6 → Scrotum
- 7 → Urinary bladder
- 8 → Sperm Duct (Vas deferens)
- 9 → Erectile tissue
- 10 → Penis
- 11 → Urethra
(b) Functions of the parts are:
- Seminal vesicle (Part 1) — They produce a secretion which serves as a medium for the transportation of the sperms.
- Prostate gland (Part 2) — It produces an alkaline secretion which mixes with the semen and helps neutralise acid in female's vagina.
- Bulbo-urethral glands (Part 3) — They produce a secretion which serves as a lubricant.
- Testis (Part 5) — They produce the male gamete sperm and the male sex hormone testosterone.
- Sperm Duct or Vas deferens (Part 8) — They carry the sperms from the epididymis to the urethra.
- Urethra (Part 11) — It serves as an outlet for delivering the sperms into the vagina.
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