| A | B |
|---|
| hormone | chemical produced by the endocrine system and released directly into the bloodstream |
| testes | male organ that produces sperm and testosterone |
| sperm | haploid cells formed in the male reproductive system |
| semen | mixture of sperm and a fluid that helps sperm move and supplies them with energy |
| ovary | female reproductive organ that produces eggs and is located in the lower part of the body |
| ovulation | monthly process in which an egg is released from an ovary and enters the oviduct, where it can become fertilized by sperm |
| uterus | hollow, muscular, pear-shaped organ where the fertilized egg develops into a baby |
| vagina | muscular tube that connects the lower end of the uterus to the outside of the body(birth canal) |
| menstrual cycle | hormone-controlled monthly cycle of changes in the female reproductive system that includes the maturation of an egg and preparation of the uterus for the fertilized egg |
| menstruation | monthly flow of blood and tissue cells that occurs when the lining of the uterus breaks down |
| pregnancy | period of development-usually about 38 to 39 weeks in humans |
| embryo | zygote that has attached to the wall of the uterus |
| amniotic sac | thin, liquid-filled, protective membrane that forms around the embryo |
| fetus | a developing baby after the first two months of pregnancy until birth |
| fetal stress | can occur during the birth process or after birth as an infant adjusts from a watery, dark, constant-temperature environment to its new one |
