a faster than normal heart rate

rapid respiration

long thick hairs such as the whiskers in cats and dogs, that are highly sensitive to pressure and touch and which provide sensory information about the environment

see deciduous teeth

an agent that is damaging to a developing embryo or fetus

the process where electrons are released from the filament when it is heated

a device for monitoring exposure to X-rays

see Platelets

the air that passes in and out of the lungs in one breath