| A | B |
|---|
| uterus | contains the womb for the developing fetus |
| fertilization | the process of sperm combining with and egg |
| ovary | organ that produces ova (eggs) |
| follicle | structure on ovary that contains a developing egg |
| progesterone | hormone that maintains pregnancy |
| lutenizing hormone | secreted by pituitary gland to produce reproductive hormones |
| estrogen | promotes development of female characteristics |
| Leydig cells | cells that secrete testosterone |
| testosterone | male sex hormone |
| epididymis | connects testicles to the vas deferens |
| hormone | a chemical in the body that regulates cells |
| gestation period | length of pregnancy |
| implantation | fertilized egg attaches to wall of uterus |
| placenta | organ that nourishes developing young |
| altricial | offspring are helpless when born |
| precocial | advanced offspring |
| oocyte | immature egg in ovary |
| estrous cycle | the entire hormonal cycle of a female animal |
| puberty | age when reproduction is possible |
| sperm | male reproductive cell |
