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Questions and Answers
Which structure allows some blood to flow from the right atrium to the left atrium in fetal circulation?
What role does the placenta play in fetal circulation?
What happens to blood flow in the ductus arteriosus after birth?
What is the primary function of the umbilical arteries in fetal circulation?
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What defines the circulation time of blood in the body?
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What is the role of alveoli in the lungs?
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What vein is formed by the union of the superior mesenteric vein and the splenic vein?
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Which structure is responsible for pumping oxygenated blood to the aorta?
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Where does the pulmonary circulation begin?
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Which veins return blood from the upper body to the heart?
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What process occurs in the hepatic portal circulation?
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What is unique about the pulmonary veins compared to other veins in the body?
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What is the purpose of the liver in relation to the blood from the digestive organs?
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Which structure in the vascular system is primarily responsible for the exchange of materials between blood and tissues?
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What feature of veins helps prevent the backflow of blood?
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What is the main purpose of anastomoses in the vascular system?
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Which of the following statements about capillaries is correct?
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What regulates blood flow in capillaries?
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Which component in the blood helps maintain colloid osmotic pressure?
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Why does blood pressure decrease as it reaches the venous end of capillaries?
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What happens to excess tissue fluid that does not re-enter the capillaries?
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