| A | B |
|---|
| cilia | hairs that filter out particles from air we breathe |
| mucus | sticky covering on nasal membranes |
| pharynx | throat |
| mouth | emergency air inlet |
| eustachian tubes | in the ear drum |
| trachea | windpipe |
| epiglottis | closes off the trachea when you swallow food |
| cartilage rings | hold the trachea open |
| bronchial tubes | 2 brancjes at the end of the trachea leading to the lungs |
| carbon dioxide | is removed from the blood |
| capillaries | tiny blood vessels |
| bronchiole | network of tiny tubes that bronchi branch into |
| alveoli | air sacs found at the end of bronchioles;like grapes |
| inhaled air | 21%oxygen,less than15%Carbon dioxide |
| exhaled air | 16%oxygen,more than 4% carbon dioxide |
| ATP | essential byproduct of respiration |
| oxidation | the use of oxygen in the burning of food |
| iron | essential for healthy red blood cells |
| mitochondria | organelle where cellular respiration takes place |
| hemoglobin | oxygen is attached to this protein and transported around the body |
