| A | B |
|---|
| metabolic rate | the rate at which all the chemical reactions that occur within an organism take place |
| mammary glands | these produce and secrete milk that nourishes developing young |
| diaphragm | a sheet of muscle located beneath the lungs that separates the chest cavity from the abdominal cavity where other organs are located |
| cerebral cortex | the highly folded outer layer of the cerebrum |
| cerebellum | responsible for balance and coordinating movement |
| gland | a group of cells that secrete fluid to be used elsewhere in the body |
| uterus | saclike, muscular organ in which embryos develop |
| placenta | an organ that provides food and oxygen and removes waste from the developing young |
| gestation | the amount of time the young stay in the uterus before they are born |
