Question

1. Describe the path of sperm from the seminiferous tubules to the urethral opening.

2 Describe the Function

Tail (flagellum)

Midpiece

Head

Acrosome

3 . Describe the functions of testosterone

Answer 1

Answer

1) Pathway of sperm

1. Seminiferous tubules
2. Rete testis
3. Epididymis
4. Vas deferens
5. Ampulla of vas deferens
6. Ejaculatory duct
7. Prostatic urethra
8. Membranous urethra
9. Spongy urethra
10. Urethral opening

2) Functions :

1. Tail (flagellum)
- Tail provides motility to the sperm. The whipping movement of tail facilitate movement of sperm in femal reproductive tract.

2. Midpiece
- Midpiece of the sperm contains mitochondria. Mitochondria functions to produce ATP and provide energy to the sperm.

3. Head
- Head of sperm contains nucleus. Nucleus of sperm fuses with nucleus of female gamate to produce a zygote.

4. Acrosome
- Acrosome synthesize enzymes such as hyaluronidase and acrosin that digest outer membrane of oocyte and allows the sperm to penetrate.

3) Functions of testosterone

• Testosterone hormoe is produced by interstitial cells in testis as well as zona reticulosa layer of adrenal cortex.
• Testosterone faciliate sperm production along with folliscle stimulating hormone.
• Testosterone helps in development of male secondary sexual characteristics such as muscle building, pubic hair, axillary hair, facial hair, pitch of male voice.
• It also boost sexual drive in male.
• It is very important to maintain bone mass density.