| Erection | The stiffening of the penis due to an increased flow of blood |
| Sperm | Male sex cells that fertilize the ovum, or egg |
| Scrotum | The sack of skin that forms a pouch containing the testicles |
| Vas deferens | A duct or tube by which sperm travel from the testicles to the seminal vesicles and urethra |
| Penis | The male sex organ used in urination and intercourse |
| Semen | The whitish fluid in which sperm are transported and ejaculated |
| Impotence | The inability to achieve an erection |
| Foreskin | The covering, which is often surgically removed at the tip of the penis |
| Epididymis | A vast group of microscopic tubes where sperm are stored |
| Premature Ejaculation | Orgasm and discharge or semen before the penis has completely entered vagina or just after entry |
| Glans | The tip of the penis, cone-shaped |
| Circumcision | Surgical removal of the foreskin of the penis that covers the glans |
| Testes | The male sex glands |
| Seminal Vesicle | The rapid discharge of sperm and semen at orgasm |
| Ovum | A female sex cell |
| Douche | A method used to cleanse the vagina |
| Fallopian Tube | The place where the egg is fertilized |
| Clitoris | The center of sexual stimulation for women |
| Menarche | The start of menstruation, occurring some time in puberty |
| Ovulation | The release of an ovum from the ovary |
| Abortion | The removal of a fetus from the uterus prior to birth |
| Labia | The lips of folds of skin covering the vaginal opening |
| Vulva | The term applied to both sets of lips together |
| Ovaries | The two storage places for ova |
| Hymen | A thin membrane that some women have across the opening of the vagina |
| Uterus | A pear-shaped organ where the fertilized ovum develops into a fetus |
| Vagina | The birth canal, also where the penis enters during intercourse |
| Cervix | The neck of the uterus, where the vagina and the uterus are joined |
| Placenta | That which attaches the fetus to the uterus and through which the fetus is fed |