| A | B |
|---|
| Function of the Respiratory System | To bring Oxygen into the Body |
| Mucus | (Snot) that helps warm and filter air |
| Hairs | Help to Filter Air |
| Trachea | Windpipe |
| Larynx | Voicbox |
| Bronchi | Connect Trachea to Lungs |
| Alveoli | Small sacs that expand inside your lungs |
| Inhaling | Breathing In |
| Exhaling | Breathing Out |
| Diaphragm | Expands and Contracts to Allow Lungs to Inhale and Exhale |
| Oxygen | The gas that Humans Need to Survive |
| Carbon Dioxide (CO2) | Gas that we exhale as a Waste |
| Nasal Cavity | Area of the nose where air is filtered and moisturized |
| Respiration | Breathing |
| Epiglottis | Cartilage flap that prevents food from entering the trachea |
| Lung | Breathing organ |
| Cilia | Hair-like projections located in the bronchial passageways |
