| A | B |
|---|
| endocrine glands | ductless-or tubeless-organs or groups of cells that secrete hormones directly into the bloodstream |
| hormones | chemical substances taht are produced in glands and help regulate many of your body's functions |
| thyroid gland | produces hormones that regulate metabolism, body heat, and bone growth |
| parathyroid glands | produces a hormone that regulates the body's calcium and phosphorus balance |
| pancreas | a gland that serves both the digestive and the endocrine systems |
| pituitary gland | regulates and controls the activities of all of the otehr endocrine glands |
| gonads | another for the ovaries and testes |
| adrenal glands | glands that help the body recover from stress and respond to emergencies |
| reproductive system | the system of organs involved in producing offspring |
| sperm | the male reproductive cells |
| testosterone | the male sex hormone |
| testes | two small glands that produce sperm, also called the testicles |
| scrotum | an external skin sac |
| penis | a tube-shaped organ that extends from the trunk of the body just above the testes |
| semen | a thick fluid containing sperm and other secretions from the male reproductive system |
| sterility | the inability to reproduce |
| ova | female reproductive cells |
| uterus | a hollow, muscular, pear-shaped organ inside a female's body |
| ovaries | the female sex glands that store the ova and produce female sex hormones |
| ovulation | the process of releasing a mature ovum into the fallopian tube each month |
| fallopian tubes | a pair of tubes with fingerlike projections that draw in the ovum |
| vagina | a muscular, elastic passageway that extends from the uterus to the outside of the body |
| cervix | the opening to the uterus |
| menstruation | shedding of the uterine lining |
