Penis

• is highly vascularised/spongy made up of spongy tissue
• at time of sexual activity, the penis erectsby having the spaces in its spongy tissue filled with blood,this enables it to penetrate the vagina during coitus.

Scrotum

• contains the testes hangs outside the body to provide it with a cooler enviroment for sperm production.
• testis
• it is made up of highly coiled tubes known as the seminiferous tubules
• the lining which contain actively dividing cells which give rise to sperms.
• it contain the interstitial cells that produce the androgen hormones.

Epididymis

• long and coiled for the purpose of sperm storage

Vas deferens

• muscular
• upon contraction pushes sperms out and allows ejaculation

Gametes

• produced in large numbers to increase chances of fertilization
• the sperms have a tail for swimming/large number of mitochondria to provide energy/allow swimming to reach the egg

Accessory glands

• are seminal vesicle, produce alkaline fluid which contain nutrients for spermatozoa
• Cowper’s gland,produce alkaline fluid that neutralises the acidity along the urethra
• and prostate gland secretes the alkaline fluid that neutralizes vaginal fluid ,it also activate the sperms.