| A | B |
|---|
| contagious | spreading by contact |
| convalescence | the gradual recovery of health and strength |
| laceration | a rough tear |
| chemotherapy | the use of chemical agents in the treatment and control of disease |
| immunity | resistance to disease or poison |
| synapse | place where a nerve impulse passes from one nerve cell to the other |
| vigor | active strength or force |
| contaminated | made impure by contact |
| paralysis | loss of motion or sensation in any part of the body |
| coronary | having to do with the heart |
| tetanus | disease caused by a bacteria causing lockjaw |
| gene | part of chromosomes that influences inheritance |
| heredity | passing of physical or mental characteristics |
| lifespan | the period from birth to death |
| metabolism | turning food into energy |
| neuron | nerve cell |
| pituitary | small endocrine gland |
| quarantine | isolating from others |
| respiration | breathing |
| sterilization | free from living germs |
| antibiotic | substance produced by a living organism |
| hygiene | rules of health |
| vaccination | inoculate with a vaccine |
| epidemic | the spread of a disease that affects many people |
