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.

(a) In the figure, the parts are named as:

1. Seminal-vesicles

2. Prostate-gland

3. Bulbo-urethral-gland

4. Epididymis

5. Testis

6. Scrotum

7. Urinary-bladder

8. Vas-deferens

9. Erectile-tissue

10. Penis

11. Urethra

(b) 1. Seminal vesicles - They are tube-like structures that produce the fluid which serves as the transporting medium for sperms.

They form the accessory glands in the male reproductive system.

2. Prostate gland - It produces an alkaline secretion.

This secretion is added into the semen. It mixes with the semen and helps neutralize the vaginal acids.

3. Bulbo-urethral gland - It produces a secretion which serves as a lubricant for the semen to pass through the urethra.

It is also called Cowper’s gland.

4. Testis - It produces the male gamete sperm and the male sex hormone testosterone.

They are contained in scrotal sacs outside of the body cavity.

5. Vas deferens - They carry the sperms from the epididymis to the urethra.

They are also referred to as the sperm ducts.

6. Urethra - It serves as an outlet for delivering the sperms into the vagina.