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15 Cards in this Set
- Front
- Back
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Arteries |
Thick-walled blood vessels that ALWAYS carry blood AWAY from the heart Transports blood under pressure. Blood moves in a pulse-like wave throughout the circulatory system. |
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Veins |
Thin-walled blood vessels that ALWAYS carry blood TOWARD the heart Thinner walls, larger diameters & less muscle than arteries. Contains 70% of total blood volume. Most veins must work against gravity |
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Capillaries |
Narrowest of all blood vessels. RBCs travel in single file. Branching of the capillaries increases the surface area available for diffusion. Connects the arterial & venous systems |
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Heart |
Size of your fist. Hardest-working muscle in the body. Contains four chambers: Left and right atria (receiving chambers). Left and right ventricles (delivery chambers). Left and right sides of the heart are separated by a muscular septum |
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Systemic Circuit |
Blood passes from the left atrium through the bicuspid (mitral) valve to the left ventricle Blood travels through the aortic semi-lunar valve to the aorta The aorta branches into smaller systemic arteries, which branch into arterioles and then capillaries. internal gas exchange occurs Deoxygenated blood returns to the right atrium via the superior & inferior vena cava |
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Coronary Circulation |
Delivers oxygenated blood directly to the heart muscle. Consists of the left & right coronary artery |
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Sinoatrial (SA) node |
(in the right atrium) maintains the heart’s intrinsic pumping rhythm. |
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Systole |
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Diastole |
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Hypertension |
Hypertension is High Blood Pressure |
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Hypotension |
Hypertension is Low Blood Pressure |
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Stroke |
A result of a damaged blood vessel (usually one supplying blood to the brain) |
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Coronary Artery Disease |
Plaque buildup in coronary arteries. Prevents the heart from receiving oxygen-rich blood Smoking and alcoholism. High blood pressure. High blood cholesterol. Stress. Diabetes. Obesity. |
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Leukemia |
Bone marrow cancer leads to abnormal WBC production in overabundance |
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Marfan’s Syndrome |
Tall and slender. Retinal detachment. * Aortic dilation. More likely to rupture sudden death. * Leaky heart valves. Heart murmor. |
