1What are the main components of the circulatory system?
2What is the primary function of the circulatory system?
3How many chambers does the human heart have?
4What is the function of arteries?
5What is the function of veins?
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6Where does gas exchange occur in the circulatory system?
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11What is blood pressure?
12What is the primary function of hemoglobin in red blood cells?
13What is the difference between pulmonary and systemic circulation?
14What initiates the heartbeat?
15What is the role of the atrioventricular (AV) node?
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16What is the function of valves in the heart?
17How does exercise affect heart rate and stroke volume?
18What is the primary role of white blood cells (leukocytes)?
19What is the role of platelets (thrombocytes)?
20What happens to blood distribution during exercise?