Draw a labelled diagram to show inter-relationship of four accessory ducts in a human male reproductive system.
OR
Draw a sectional view of the human ovary showing the different stages of developing follicles, corpus luteum and ovulation.

Explanation

Male accessory glands include paired seminal vesicles, a prostate, paired bulbourethral glands and epididymis.
(i) Seminal vesicles : These secrete mucous and a watery alkaline fluid that contain fructose which provides energy to the sperm.
(ii) Prostate gland : It surrounds the urethra and produces a milky secretion which forms part of semen. This secretion contains citric acid, lipid and enzymes. The secretion nourishes and activates the spermatozoa to swim.
(iii) Bulbourethral gland : Its secretions helps in the lubrication of the penis.
(iv) Epididymis : Spermatozoa formed in the testis enter the epididymis and remain stored. In epididymis, sperm undergo maturation process to acquire motility.
OR
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