| Term | Definition |
|---|---|
| Nose | Respiration begins here. It gets the air ready for the lungs. It moistens and cleans the air. |
| Mucus | A thick, sticky liquid made in the nose. Its job is to trap dust and germs. |
| Trachea | Also known as the windpipe. The tube that goes from the nose to the lungs. |
| Where does your body make mucus? | Nose, mouth, throat, trachea, eyes, and ears |
| Cilia | Tiny hairs that move particles of dust and germs from the trachea to the throat through mucus. |
| Respiratory system | The group of organs that takes oxygen from the air and removes carbon dioxide from you body. |
| What do blood vessels in the nose do? | They warm the air. |
| Diaphragm | The large muscle below the lungs that helps you breathe. |
| Blowing your nose helps you get rid of what? | Germs that are trapped in mucus. |
| Exhale | Breathing air out. |
| Inhale | Breathing air in. |
| When we breathe, what fraction of air is oxygen? | One fifth (1/5) |
| Path of the Respiratory System | Nose > Trachea > Bronchial Tubes > Lungs > Air Sacs > Diaphragm |
| Bronchial tubes | Each tube goes into each lung |
| In the lungs, the bronchial tubes divides into smaller and smaller tubes called ______? | Bronchia |
| Air Sacs | The smallest bronchia that are clusters of tiny pouches. They are hollow. |
| CO2 | Carbon Dioxide |
| What are responsible for exchanging carbon dioxide for oxygen in the lungs? | Air sacs |
| Where does the oxygen go after it leaves the air sacs? | The oxygen goes to the blood vessels. |
| Red blood cells | Delivers the oxygen to and from all of the cells in our body. |
| Where are the intercostal muscles located? | Between the ribs. |
| When the intercostal muscles and diaphragm contract what does this allow? | Space in the cavity for the lungs to fill up with air. |
| Capillaries | Tiny blood vessels. They are so narrow that the blood cells go through in a single file line. |
| Destruction of air sacs from smoking cigarettes causes what health condition? | Emphysema |
| Chronic bronchitis and asthma is caused when _____. | Too much mucus is made making the passage way gets smaller. The air has a harder time to get through. |
| How do red blood cells float? | They float in plasma. |
| How do cells get energy? | They break down nutrients. |
| What carries blood away from the heart? | Arteries |
| What carries blood to the heart? | Veins |
| Oxygen-rich blood is this color. | Bright red |
| Deoxygenated blood is this color. | Dark, dull, purplish |
| Your body needs this for every activity (sleeping, running, playing, learning) | ENERGY |
| Cells use energy to help you grow by doing this. | Divides into more cells and repair damaged cells |
| Respiration equation | sugar + oxygen >carbon dioxide + water + energy |
