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Multiple Choice
Which chamber of the heart is responsible for pumping oxygenated blood into the systemic circulation?
A
Right atrium
B
Left ventricle
C
Left atrium
D
Right ventricle
Verified step by step guidance
1
Step 1: Understand the function of the heart chambers. The heart has four chambers: the right atrium, right ventricle, left atrium, and left ventricle. Each chamber has a specific role in blood circulation.
Step 2: Recall the pathway of blood circulation. Oxygenated blood from the lungs enters the left atrium via the pulmonary veins. From the left atrium, blood flows into the left ventricle.
Step 3: Identify the chamber responsible for systemic circulation. The left ventricle pumps oxygenated blood into the systemic circulation through the aorta, delivering oxygen and nutrients to the body's tissues.
Step 4: Differentiate between the chambers. The right atrium and right ventricle are involved in pulmonary circulation, which moves deoxygenated blood to the lungs for oxygenation. The left atrium receives oxygenated blood, but it is the left ventricle that pumps it into systemic circulation.
Step 5: Conclude that the left ventricle is the chamber responsible for pumping oxygenated blood into the systemic circulation, as it has the thickest muscular wall to generate the necessary pressure for systemic blood flow.