Biology Circulation / Transport PMC 2020
PMDC Verified Question 38 of 54
In human heart the left atrium receives:
A
The superior vena cava
B
The coronary sinus
C
The inferior vena cava
D
The four pulmonary veins
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: The four pulmonary veins
Concept:

The left atrium serves as the collection chamber for oxygen-rich blood returning from the pulmonary circuit.

Formula:

None

Solution:

  • After gas exchange in the lungs, oxygenated blood travels back to the heart.


  • It enters the left atrium specifically via the four pulmonary veins (two from each lung).


Why other options are incorrect:

  • Vena Cava & Coronary Sinus: These vessels deliver deoxygenated blood from the body and heart muscle specifically to the right atrium.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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