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Multiple Choice
Which of the following structures is part of the pulmonary circuit?
A
Superior vena cava
B
Pulmonary artery
C
Renal artery
D
Aorta
Verified step by step guidance
1
Step 1: Understand the pulmonary circuit. The pulmonary circuit is responsible for transporting deoxygenated blood from the heart to the lungs for oxygenation and then returning oxygenated blood back to the heart.
Step 2: Identify the role of the pulmonary artery. The pulmonary artery carries deoxygenated blood from the right ventricle of the heart to the lungs, making it a key structure in the pulmonary circuit.
Step 3: Examine the other options. The superior vena cava, renal artery, and aorta are not part of the pulmonary circuit. The superior vena cava transports deoxygenated blood from the upper body to the right atrium, the renal artery supplies blood to the kidneys, and the aorta distributes oxygenated blood to the systemic circuit.
Step 4: Compare the functions of the pulmonary artery with the other options. Only the pulmonary artery directly participates in the transport of blood within the pulmonary circuit.
Step 5: Conclude that the pulmonary artery is the correct answer because it is the structure that is part of the pulmonary circuit, as it transports blood to the lungs for oxygenation.