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7 Cards in this Set
- Front
- Back
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Consists of |
Heart Blood Blood Vessels
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Functions |
Carries needed materials to cells in body Removes waste products from cells Fights disease with WBCs |
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What does the heart do? & what size is it? How many chambers? What is it separated by? |
Pumps blood throughout body Size of your fist Enclosed in pericardium 4 chambers: -upper: right & left atria -lower: right & left ventricle Chambers separated by valves |
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How many valves? Where at? Composed of what tissue? |
4 valves Between upper & lower chambers Composed of connective tissue Flap like structures allow blood to flow in/out in 1 direction |
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What are semilunar valves? |
CT reinforced by fibers which prevent valves from turning inside out Shaped like half moon Located between aorta & left ventricle & pulmonary artery & right ventricle |
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What are tricuspid & bicuspid valves? |
Made of CT Flaps pulled down by chordae Tendinae Controlled by contraction of papillary muscles within the ventricles |
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Circulation of the blood in the heart? |
Blood flows in 1* direction Transported to all parts of body in 2 loops 1. Pulmonary(lungs) 2. Systemic (rest of body) |
