Which of the following sequences is truly a systemic circulation … - Vidyadip

MCQ

Which of the following sequences is truly a systemic circulation pathway?

A
Left auricle → Left ventricle →Pulmonary aorta → Tissues → Right auricle
B
Left auricle → Left ventricle → Aorta →Arteries → Tissues → Veins → Right atrium
C
Right ventricle → Pulmonary aorta → Tissues → Pulmonary veins → Left auricle
D
Right auricle → Left ventricle → Aorta →Tissues → Veins →Right auricle

✓

Answer

B. Left auricle → Left ventricle → Aorta →Arteries → Tissues → Veins → Right atrium
Explanation:
Systemic circulation is the movement of the blood between heart and rest of the body (tissues) and the back to the heart. The oxygenated blood moves from the left auricle into the left ventricle. From here the blood moves into the aorta which ultimately divides into arteries that carry oxygenated blood to various tissues in the body. From the tissues deoxygenated blood is carried by the veins into the right atrium via superior vena cava and inferior vena cava.

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