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Blood Vessels

Blood Vessels and Circulatory Routes

QuestionAnswer
What is the main function of arteries? Arteries carry blood away from the heart, usually oxygenated (except pulmonary arteries).
What is the main function of veins? Veins carry blood toward the heart, usually deoxygenated (except pulmonary veins).
What is the function of capillaries? Capillaries allow exchange of gases, nutrients, and waste between blood and tissues.
How do arteries differ structurally from veins? Arteries have thicker, more muscular walls to handle high pressure; veins have thinner walls and valves to prevent backflow.
Why do veins have valves? To prevent the backflow of blood, especially in the limbs where blood flows against gravity
hat are the two major circulatory routes in the body? Systemic circulation and pulmonary circulation.
What is systemic circulation? The circulation of oxygenated blood from the heart to the body and return of deoxygenated blood back to the heart.
What is pulmonary circulation? The circulation of blood from the heart to the lungs and back to the heart for gas exchange.
Which vessel carries oxygenated blood from the lungs to the heart? Pulmonary veins.
What is the aorta, and what is its role? The aorta is the largest artery in the body; it carries oxygenated blood from the left ventricle to the systemic circulation
Created by: Dominique Daigl
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