Human Circulatory System

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What is the main function of the circulatory system?
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The main function of the circulatory system is to transport blood and nutrients throughout the body.
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What are the main components of the circulatory system?
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The main components are the heart, blood vessels, and blood.
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How does the heart function in the circulatory system?
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The heart pumps blood through the body by rhythmic contractions, ensuring circulation.
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What is the difference between arteries and veins?
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Arteries carry oxygen-rich blood away from the heart; veins carry oxygen-poor blood back to the heart.
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What role do capillaries play in the circulatory system?
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Capillaries enable the exchange of oxygen, nutrients, and waste between blood and tissues.
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What is systemic circulation?
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Systemic circulation is the part of the circulatory system that carries blood from the heart to the rest of the body and back.
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What is pulmonary circulation?
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Pulmonary circulation carries blood between the heart and lungs.
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How does blood pressure affect the circulatory system?
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Blood pressure is the force exerted by blood against vessel walls; it's vital for circulation.
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What is the function of red blood cells in the circulatory system?
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Red blood cells transport oxygen from the lungs to the body's tissues and return carbon dioxide to the lungs for exhalation.
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What role does the heart’s electrical system play in circulation?
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The heart’s electrical system controls the heart rate and rhythm for effective circulation.
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Why are valves important in the circulatory system?
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Valves prevent backflow, ensuring one-way blood flow through the heart and veins.
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How does exercise benefit the circulatory system?
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Exercise strengthens the heart, improves circulation, and enhances oxygen delivery to tissues.
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What is the impact of cholesterol on the circulatory system?
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High cholesterol can lead to atherosclerosis, restricting blood flow and increasing heart disease risk.
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What are white blood cells' functions in the circulatory system?
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White blood cells defend the body against infections and foreign invaders.
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What is the role of platelets in the circulatory system?
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Platelets help in clotting, preventing blood loss from damaged vessels.
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