| A | B |
|---|
| What makes up your circulatory system? | the heart, blood, and blood vessels |
| What is the heart? | The heart is a hollow, muscular organ that consists of two pumps working side by side. |
| What are the three major types of blood vessels? | artery, capillary, and vein |
| Into which side of the heart does oxygen-poor blood flow? | the right side |
| Which side of the heart sends oxygen-rich blood from the lungs to different parts of the body? | the left side |
| Why is the left side of the heart stronger than the right side? | The left side has to send blood over longer distances. |
| What effect can a diet that is low in iron have on your blood? | The blood may not have enough hemoglobin (substance in red blood cells that carries oxygen). You may also be anemic (low iron). |
| What are some symptoms of anemia? | You may beel tired all the time, and you may be very pale. |
| What harm can high blood pressure do? | High blood pressure cause damage to the heart, brain, and other organs. |
| Can doctors always tell the exact cause of high blood pressure? | No |
| Can high blood pressure be inherited? | Yes, it can. |
| Name ways to keep your circulatory system healthy. | Eat a low-fat diet, get plenty of exercise regularly, avoid unnecessary drugs, don't smoke, and don't eat too much salt |
| What harm can be done by fatty substances in the blood? | Fatty substances may stick to the inside walls of your arteries causing blockage and decrease of blood flow. |
| What are some harmful effects of using drugs. | Some drugs cause the heart to beat too fast, raise blood pressure, or narrow the blood vessels |
| one of two spaces in the TOP part of the heart that receive blood from veins | atrium |
| one of two spaces in the BOTTOM part of the heart that pump blood out of the heart | ventricle |
| the kind of blood vessel that carries blood away from the heart | artery |
| a tiny blood vessel with thin walls through which oxygen, nutrients, and wastes pass | capillary |
| the kind of blood vessel that carries blood back to the heart | vein |
| the watery part of blood that carries nutrients, wastes, and blood cells | plasma |
| the kind of blood cell that carries oxygen to other body cells | red blood cell |
| the kind of blood cell that fights germs | white blood cell |
| a tiny part of a cell that helps stop bleeding (scab will form) | platelet |
| a condition in which the number of healthy red blood cells or the amount of hemoglobin is low | anemia |
| the substance in red blood cells that carries oxygen | hemoglobin |
| a disease in which blood is pumped through the arteries with too much force | high blood pressure |
| a disease in which fatty substances build up on the inside walls of arteries | atherosclerosis |
