| A | B |
|---|
| follicle | collection of cells that surrounds and nourishes an egg while it is in the ovary |
| ovulation | process by which an egg is released from the ovary and becomes available for fertilization |
| menstrual cycle | series of changes in the female reproductive system that takes place over the course of one month |
| endometrium | lining of the uterus |
| corpus luteum | follicle after ovulation; also called a yellow body because of its yellow color |
| menopause | period of life when the female reproductive system permanently stops the menstrual cycle |
| zygote | cell that forms when a male gamete fertilizes a female gamete |
| infertility | persistent condition in which offspring cannot be produced |
| sexually transmitted disease (STD) | disease that is passed from one person to another during sexual contact |
