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12 Cards in this Set
- Front
- Back
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What is the main function of the circulatory system? |
To transport nutrients and oxygen around the body and eliminate waste. |
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Compare the structure and function of the atria and ventricles. |
Atria: - Blood enters from blood vessels - Blood exits from the valve. - Thin muscular walls. Ventricles: - Blood enters from the valve. - Blood exits from blood vessels - Thick muscular walls. The ventricles need to have thicker and muscular walls because they have much further to pump blood. |
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Outline the path of blood as it completes one entire circuit by naming each heart chamber and major blood vessel that it flows through. |
superior vena cava, inferior vena cava, right atrium, tricuspid valve, right ventricle, pulmonary artery, lung capillaries, pulmonary vein, left atrium, mitral valve, left ventricle, aorta |
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Outline the relationship between the respiratory and circulatory systems. |
- Oxygen travels through your bloodstream - It moves across the membrane of the lungs and the blood vessels - Oxygen is take to the cells in the body - Carbon dioxide is taken back to the lungs - CO2 diffuses from the blood into the lungs - Exhalation |
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What is the structure and function of a artery? |
Structure: Elastic muscular tubes Thickest and strongest of all blood vessels. Function: Transport nutrient-rich blood away from the heart (to the body and lungs) |
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What is the structure and function a capillary? |
Structure: Microscopically small tubes Thin epithelial layer (blood cells can only move single file through it). Function: Site of exchange of nutrients and waste products (diffusion) Connective network between arteries and veins. |
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What is the structure and function of a vein? |
Structure: Muscular layer (thinner than arteries) Contains a valve (to control direction of blood flow). Function: Transport waste-rich/O2-poor blood to the heart (away from the body and lungs). |
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Describe the function of the coronary artery. |
To transport blood away from the heart and back to the heart again. |
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Describe the plasma |
The liquid and dissolved particles/molecules 92%, 7% plasma and 1% various dissolved molecules |
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Describe red blood cells |
flexible concave discs full hemoglobin carries oxygen Iron containing protein |
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Describe white blood cells |
Have a nucleus No hemoglobin Fight infections Maintain long term immunity |
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Describe platelets |
organize and control blood clots. |
