| A | B |
|---|
| system made of nose, throat, airways, and lungs which brings oxygen to body cells and removes carbon dioxide | respiratory system |
| strong tube through which air travels down the throat to the bronchi | trachea (windpipe) |
| 2 large tubes which carry air to the lungs | bronchi |
| tiny air sacs at the end of the bronchi where air meets blood | alveoli |
| organ in our chest which helps us breathe | lung |
| muscle that helps move air into and out of the lungs. You would not be able to breathe without this. | diaphragm |
| system made of blood, heart, and blood vessels that moves blood throughout the body | circulatory system |
| blood vessels that carry blood AWAY from the heart | arteries |
| blood vessels that carry blood toward the heart | veins |
| tiny blood vessels that CONNECT arteries and veins | capillaries |
| smallest unit of living matter | cell |
| What do red blood cells do? | Red blood cells carry oxygen to body cells. They also carry carbon dioxide away from body cells. |
| What is the job of the heart? | The job of the heart is to pump blood through the body's circulatory system. |
| How does the heart work with the respiratory system? | When the heart works with the respiratory system, the heart sends oxygen-poor blood to the lungs where it returns oxygen-rich. |
| What does the right side of the heart do? | The right side of the heart receives oxygen-poor blood from the body through veins. It then pumps this blood to the lungs where oxygen is added to the blood and carbond dioxide is removed. |
| What does the left side of the heart do? | The left side of the heart receives the oxygen-rich blood from the lungs, and it pumps this blood to the rest of the body through arteries. |
| What is the main artery called? | The main artery is called the aorta. |
| How does air travel when you breathe? | Air travels from the nose and mouth to the throat, then through the trachea to the bronchi. |
| What is blood made of? | Blood is made of different types of cells. |
| What are the 3 main types of blood vessels? | arteries, veins, and capillaries |
| The heart is a __________ that contracts to force blood throughout the body. | muscle |
| How many chambers does the heart contain? | The heart contains 4 chambers (2 halves). |
| In which organs does the blood exchange carbon dioxide for oxygen? | in the lungs |
