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Science lessons 9-11
| Term | Definition |
|---|---|
| Describe how your pulse changes after running. Why would this happen? | Your pulse goes up after exercise because your heart is beating faster. Your cells need more energy, so your heart beats faster to get oxygen and nutrients to your cells. |
| Describe what your pulse is. | The rate your heart is beating. You can feel this at your wrist or your neck. |
| If you increase your activity level for a period of months, how will your resting pulse change? | Your resting pulse rate should decrease after months of exercise. |
| What is an important function of the respiratory system? | The respiratory system is in charge of exchanging gases when we breathe in and out. We breathe in oxygen and exhale carbon dioxide. |
| What organs make up the respiratory system? | The major organs are the nose, mouth, trachea (windpipe), lungs, and alveoli. (the alveoli is the door in and out of the lungs) |
| What causes blood to move around your body? | Your heart acts as a pump that moves blood from the heart to the rest of the body. |
| How many beats per minute does a typical heart beat? | 60-80 BPM. |
| What is the function of the circulatory system? | Your circulatory system is in charge of moving the blood around your body. |
| What are the organs that make up the circulatory system? | It is made up of blood vessels (veins, arteries, capillaries) , heart and blood cells. |
| What are three things blood transports in the circulatory system? | Nutrients, Oxygen, and carbon dioxide. |
| Which blood vessels carry blood away from the heart? | The Arteries (A arteries A away) |
| Which blood vessels carry blood toward the heart? | The Veins |
| Which blood vessels are so small that oxygen and nutrients can pass between them and surrounding parts of the body? | The Capillaries |
| Describe the process of getting oxygen from the air to the cells in your body. Follow the path from the mouth/nose to the cell. | We can breathe in oxygen through the nose and mouth, it goes down our windpipe, to the alveoli in our lungs, from there it is transferred to your blood through capillaries and then pumped to the rest of the body by your heart. |
| Where can you find many capillaries in your body? | Around the alveoli in the lungs and on the villi in your small intestine. |
| Describe what BTB is, how it works and what it tells you. | BTB is an indicator that will turn from blue to yellow in the presence of carbon dioxide. (the more yellow the more carbon dioxide) |
| What gas is necessary to get energy from food? | Oxygen |
| Why does your respiration rate increase with exercise? | Because you need more energy and therefore you need more oxygen to break down food. |
| How do the digestive systems work together to keep you healthy? | Your digestive system breaks down food so that nutrients and sugars can enter your bloodstream and reach your cells. |
| How do the circulatory, systems work together to keep you healthy? | The oxygen i breathe travels to my lungs and is carried by my blood to all the cells in my body. |
| How do the respiratory systems work together to keep you healthy? | Inside the cells, oxygen helps break down nutrients and sugars even further to produce energy. The carbon dioxide waste that is formed is then carried back to your lungs, where you breathe it out. |
| How do the nervous systems work together to keep you healthy? | My nervous system coordinates all of the other systems so they can function correctly. |
Created by:
31hollander