Kaplan Nursing Entrance Practice Exam 2025 – The All-in-One Guide to Exam Success!

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What is the sequence of blood flow through the heart starting from the vena cava?

R atria -> tricuspid valve -> R Ventricle

R Ventricle -> pulmonary artery -> L atria

R atria -> pulmonary vein -> L ventricles

R atria -> tricuspid valve -> R Ventricle -> pulmonary artery

The sequence of blood flow through the heart, starting from the vena cava, is accurately described by the correct answer. Blood returns to the heart from the body through the superior and inferior vena cavae, entering the right atrium. From there, it flows through the tricuspid valve into the right ventricle. The right ventricle then contracts, sending the deoxygenated blood through the pulmonary artery toward the lungs, where it will receive oxygen.

This sequence is crucial in the circulatory process, delineating the pathway that blood follows to ensure it is oxygenated in the lungs before returning to the heart's left side and then being pumped out to the rest of the body. Understanding this flow is essential for grasping the heart's function in managing blood circulation effectively. Each component plays a vital role in maintaining efficient operation, and this specific order is fundamental to the heart's role as a pump in the circulatory system.

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