| A | B |
|---|
| body system gets oxygen in body and removes carbon dioxide and water from body | respiratory system |
| epiglottis | cuts off opening to windpipe when youn swallow; routes food and water down to digestive system; keeps you from choking |
| trachea | windpipe |
| larynx | voice box, contains vocal cords |
| vocal cords | vibrate as air passes them, together with mouth and tongue produce sounds |
| bronchus | found in air tubes, form the respiratory tree |
| alveoli | make up most tissue of the lungs |
| lungs | main organ of respiration or breathing |
| diaphragm | muscle at bottom of chests contacts, pulls down botttom of chest, aids breathng |
| excretory system | provides way for wastes to be removed from the body |
| excretion | process of removing wastes |
| kidneys | keep body salt in right concentrations |
| nephrons | microscopic chemical filtering factory in kidneys |
| capsule | cup-shaped part of the nephron |
| ureter | connects urine to urinary bladder |
| urinary bladder | stores urine, expands as it stores urine |
| urethra | urine passes out of tube at bottom of bladder |
| liver | acts as filter for blood passing through it |
| skin | largest organ of human body |
| epidermis | outer layer of skin |
| dermis | inner layer of skin |
| urea | nitrogen waste formed by liver |
