| A | B |
|---|
| respiration | energy-releasing process that is fueled by oxygen |
| nose | warms, filters, & moistens air |
| epiglottis | small flap of tissue that closes over the trachea |
| trachea | carries air from the nose to the lungs; windpipe |
| pharynx | back of the throat |
| larynx | voice box; contains vocal cords |
| vocal cords | folds of tissue stretched across the larynx that produces sound when vibration occurs |
| bronchi | tubes that branch off form the trachea & enters the lungs |
| lungs | bronchi, bronchioles, alveoli; main respiratory organ |
| alveoli | grape-like clusters of round sacs in the lungs; site of gas exchange |
| diaphragm | dome-shape muscle that aids in breathing |
| bronchioles | small tubes that branch off form the bronchi |
| trachea & bronchi | made of cartilage |
| inhaling | diaphragm goes down |
| exhaling | diaphragm goes up |
| cilia | microscopic hair-like strutures found lining the respiratory tract that pushes mucus up |
| mucus | slippery substance that lines the repiratory tract that traps invading organisms & dirt |
