Male physiology

Question 1

Function of testes

Answer 1

• Formation of spermatozoa

- hormone synthesis: extra tubular stroma

Question 2

3 stages to gametogenesis

Answer 2

1. Spermatocytogenesis
2. Meiotic division
3. Spermiogenesis

Question 3

Function of epididymis

Answer 3

• Fluid absorption
• Sperm transfer
• Sperm storage
• Sperm maturation

Question 4

Sperm maturation

Answer 4

1. forward progressive motility

2. attainment of fertilising ability (ability to bind and penetrate through Z.pelcuida and oocyte)

Question 5

Function of ductus deferens

Answer 5

• Transfer of sperm from epididymis to prostatic urethra via ejaculatory duct

Question 6

Function of both epididmides and ductus deferens

Answer 6

• Ejaculation
• Smooth muscle of cauda epididymis and ductus deferens richly innervated by sympathetic nervous system
• both organs display intense peristaltic contractions at ejaculation

Question 7

Sex accessory glands

Answer 7

• Seminal vesicle

- Prostate gland

Question 8

Role of sex accessory glands

Answer 8

• produce seminal fluid of the ejaculate
• secretions constitute 95% of the ejaculate
• secretions maintian viability and motility of sperm and aid transfer and transport through the female tract

Question 9

Erection and Ejaculation

Answer 9

E: excitory phase
P: plateau phase
O: orgasm
R: resolution phase