| Term | Definition |
| testes | reproductive glands which produce the sperms and male sex hormones |
| seminiferous tubules | specific location of sperm forming cells within the testes |
| epididymis | location of sperm storage prior to ejaculation |
| vas deferens | a tube (duct) which transports sperms from the testes to the abdominal cavity and down the posterior surface of the urinary bladder |
| seminal vesicles | gland which secretes a thick fluid containing some nutrients |
| prostate gland | gland which secretes an alkaline fluid into the urethra which increases the motility of the sperm |
| penis | ejaculatory organ which carries semem; through which the urethra passes (from the kidneys) |
| semen | sperms (over 200 million/ejaculation) + secretions from three glands which provide food and an alkaline environment so that the sperms can be motile and protected against acidic secretions in the female vagina |
| GnRH | (from the hypothalamus) stimulates the pituitary to release FSH and LH |
| FSH | (from pituitary gland) causes development of the tubules in the testes that produce the sperms |
| LH | (from pituitary gland) stimulate formation and secretion of testosterone by the testes |
| testosterone | promotes the mature development of the male's reproductive system and continutes to influence sperm production |