| A | B |
|---|
| artificial insemination | introduction of semen into the uterus or oviduct by other than natural means |
| birth control | various methods used to prevent pregnancy |
| cervix | hollow, narrow, neck area of the uterus leading to the vagina |
| egg | female reproductive cell produced in the ovaries; ovum |
| embryo | a developing plant or animal inside an egg or the female parent |
| endometrium | the uterine lining; is shed at the start of each menstrual cycle |
| estrous cycle | time during which some female mammals can be fertilized; "heat" |
| fertilize | the sperm and the egg get together |
| follicle | a tissue within an ovary; site of development of the egg before fertilization |
| hormone | chemical regulator produced by glands which effects other parts of body; chemical messenger |
| in vitro fertilization | fertilization of the egg in a lab |
| meiosis | division of cell nucleus that reduces chromosomes by 1/2 |
| menstruation | shedding of uterine lining in nonpregnant females; characterized by bleeding a few days each month |
| menstual cycle | monthly series of hormonal changes including egg maturation & preparation of uterus for pregnancy |
| ovary | organ where eggs are produced |
| ovulation | in menstrual cycle, follicle of ovary bursts to release mature egg |
| penis | male reproductive organ in animal that have internal fertilization |
| progesterone | hormone active in reproductive cycles of females |
| secondary sex differences | development/changes which occur for each sex at puberty |
| semen | combination of sperm cells & fluid that protects & nourishes them |
| sperm | male reproductive cell found in testes |
| sterilization | surgical procedure that renders the organism incapable of producing/releasing viable sperm or eggs |
| testes | male organ in which sperm is produced |
| testosterone | male hormone that stimulates formation of sperm and secondary sex characteristics |
| uterus (womb) | thick-walled, muscular organ in female mammals where embryo developes |
| vagina | organ in the female that receives the penis from the male during sexual intercourse |
| zygote | fertilized egg resulting from the union of a sperm & an egg |
