Question

bio - 202 topic 7: male and female reproductive physiology
practice it
what is the vas deferens?
a gland that produces semen
a bone in the penis
a muscular tube that transports sperm from the epididymis to the urethra
a blood vessel that supplies the testes
a nerve that controls ejaculation

Explanation:

The vas deferens is a key part of the male reproductive system. It is a muscular tube. Its main function is to transport sperm. The starting point is the epididymis (where sperm mature and are stored) and the endpoint is the urethra (through which semen is ejaculated).

• The first option is incorrect as glands that produce semen are like the prostate gland, seminal vesicles etc., not the vas deferens.
• The second option is wrong as there is no bone in the penis in humans (in some other animals like walruses there is a baculum, but not relevant here).
• The fourth option is incorrect as blood vessels supplying the testes are the testicular arteries etc., not the vas deferens.
• The fifth option is wrong as nerves control ejaculation (like the pelvic nerves etc.), not the vas deferens which is a transport structure.

Answer:

C. A muscular tube that transports sperm from the epididymis to the urethra