Word bank:
Capillary, vein, artery, transport, gas exchange, red blood cells, white blood cells, immune system, heart, lungs, circulatory system, important, plants, carbon dioxide (CO2), oxygen (O2), alveoli, fights
1. _________________ give us the gas oxygen to breathe.
2. _______________________ are cells in the blood that transport oxygen to body cells.
3. Very small blood vessels for example at the tips of your fingers are called_______________________.
4. Next to your heart, you have a very big ___________________ called the aorta. It transports blood away from the heart.
5. We breathe out the gas ___________________________.
6. The ________________________________ is important because it brings oxygen and glucose to different parts of the body.
7. The ______________________________ is important because it ____________________________ disease.
8. ________________________________ are cells in the blood which are part of the immune system.
9. Oxygen is very important. Without it, the cells cannot perform the process of _________________________.
10. The subway _______________________people to school and to work. Your circulatory system has a similar function when it comes to blood.
11. When you inhale oxygen, it goes to your _______________first, then it goes to the heart.
12. You should not eat too much fat. It can clog your _________________, ____________________, and _________________________. This can lead to a heart attack or a stroke.
13. Your ___________________ is the second most important organ in the body because it pumps blood and helps distribute oxygen.
14. In your cells, _________________________ occurs. Oxygen goes into your cells, carbon dioxide comes out of your cells.
15. There are tiny air sacks in the lungs where gas exchange occurs, they are called the __________________.