Reproductive System

Question 1

Explain the structure of the testes and the process of spermatogonia

Answer 1

The testes are the male gonads, and consist of paired oval glands that sit outside the body within the scrotum. Lower temperature is required for normal spermatogenesis. They are surrounded by a dense white capsule called the tunica albuginea, and septa form 200-300 compartments called lobules. Each is filled with 2 or 3 seminiferous tubules where sperm are formed. Spermatogenesis is the formation of sperm from spermatogonia. Seminiferous tubules contain all stages of sperm development: spermatogonia, primary spermatocyte, secondary spermatocytes, spermatid and spermatozoa. The supporting cells are called Sertoli cells. Leydig cells in between tubules secrete testosterone.

Question 2

Diagramatically illustrate spermatogonia.

Answer 2

Question 3

Draw a spermatozoon

Answer 3

Question 4

Draw the female reproductive system

Answer 4

Question 5

Describe the structure of the ovary

Answer 5

• Tunica albuginea: a capsule of dense connective tissue
• Cortex: a region just deep to the tunica, containing the follicles
• Medulla: deeper region composed of connective tissue, blood vessels and lymphatics
• Germinal epithelium: simple epithelial covering of the ovary

Question 6

Illustrate the male reproductive system

Answer 6