| A | B |
|---|
| Cardiovascular system | Heart, blood vessels, blood |
| Diffusion and active transport | 2 types of movement of materials in & out of cells |
| Diffusion | When more in one area and less in another, then it tries to equal out |
| Active transport | Opposite of diffusion; needs energy in cell |
| Heart | 4 chambered muscle |
| Atriums | 2 upper chambers |
| Ventricles | 2 lower chambers |
| Heartbeat | Atriums contract, then ventricles contract |
| 3 sections to the circulatory system | coronary, pulmonary, systemic |
| Coronary circulation | flow of blood to and from the tissues of heart |
| Pulmonary circulation | Flow of blood through heart to lungs and back to heart |
| aorta | Largest artery in body, carries oxygen rich blood to body |
| Systemic circulation | Oxygen rich blood moves to all parts of your body except heart and lungs |
| Capillaries | Connect arteries to veins & exchange carbon dioxide and oxygen |
| Veins | Carry blood back to heart (full of CO2) |
| Arteries | Blood vessels that carry blood away from heart |
| Nutrients and oxygen diffuse into body cells through ____________. | capillaries |
| Blood pressure | Force of blood on walls of the blood vessels |
| Blood pressure is high in ____ and low in ___ | High in arteries, low in veins |
| First blood pressure number | Measure of pressure caused when blood pushed out of heart |
| Second blood pressure number | Measure of pressure as ventricles fill with blood just before contraction |
| Atherosclerosis | Deposits of fat build on walls of arteries |
| Hypertension | High blood pressure; makes heart work harder |
| Heart failure | Heart can't pump blood efficiently |
| Best diet | Low in sugar, salt, fats, saturated fats, cholesterol |
