| A | B |
|---|
| vertebrae | bones of your backbone |
| joint | where two bones come together |
| ligaments | holds the bones of a joint together |
| cartilage | cushions a movable joint |
| red marrow | produces blood cells |
| yellow marrow | stores fat for energy |
| involuntary muscles | muscles not under conscious control |
| voluntary muscles | muscles under conscious control |
| cardiac muscle | muscle found only in the heart |
| smooth muscle | involuntary muscle found in internal organs |
| skeletal muscle | voluntary muscle that controls the skeleton |
| tendon | connects muscle to bone |
| carbon dioxide | waste product of respiration |
| pharynx | the airway between your nose and trachea |
| trachea | windpipe |
| bronchi | the air passages within your lungs |
| diaphragm | muscle under the lungs that contracts when you inhale |
| red blood cells | transport oxygen throughout the body |
| white blood cells | attack invading microorganisms |
| heart | pumps blood throughout the body |
| arteries | carry blood away from the heart |
| veins | return blood to the heart from other parts of the body |
| capillaries | part of circulatory system where gas exchange occurs |
| peripheral nervous system | made up of nerves of the body |
| central nervous system | made up of brain and spinal cord |
| somatic nerves | control voluntary actions |
| autonomic nerves | control involuntary actions |
| mechanical digestion | digestion carried out by your teeth |
| saliva | produced by your salivary glands |
| esophagus | tube that connects your mouth to your stomach |
| peristalsis | muscle contractions that keep food moving along |
| liver | produces bile |
| small intestine | where most chemical digestions and nutrient absorption take place |
| urea | a chemical waste product found in urine |
| kidneys | filter wastes from the blood |
| bladder | stores urine |
| urethra | tube through which urine exits the body |
| skin | largest organ in the body, involved in removing wastes |
