The muscular organ of man through which urethra passes ________ . 

Male gametes are formed in the _________.   

A tube carrying sperms out of testicles is __________.

Testes produce male sex cells called  _______.

When the fusion of sperm and egg takes place outside the body is ________ .

The maternal tissue which nourishes the foetus is __________.

After fertilisation ___________ is formed.

The process of fertilisation takes place in the _________.

Testes secrete male sex hormone called __________.

The flow of blood in females in every cycle is ________.