The blood enters the ________________ side of heart ?
Correct answer: A. Posterior
- A. Posterior
- B. Anterior
- C. Lateral
- D. All possible
Explanation
In the usual anatomical description, blood enters the heart from the posterior side through the atria and leaves through vessels located more anteriorly. The venae cavae and pulmonary veins bring blood into the atria, while the ventricles pump it out through the arteries. Students may choose anterior because the major arteries are prominent at the front, but those vessels carry blood away rather than into the heart.
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About Human Heart
The human heart is a four chambered muscular pump that maintains double circulation through the pulmonary and systemic circuits. Questions cover atria, ventricles, valves, major blood vessels, the cardiac cycle, pressure changes, the conduction system and ECG, while distinguishing arteries and veins from the chambers that receive or eject blood.
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