Biology Circulation / Transport SZABMU 2023
PMDC Verified Question 15 of 54
In human heart, the left atrium receives:
A
The Superior Vena Cava
B
The Inferior Vena Cava
C
The Coronary Sinus
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 side of the heart is exclusively responsible for handling oxygenated blood returning from the lungs.

Formula:

None

Solution:

  • The pulmonary circulation carries blood to the lungs to pick up oxygen.


  • Once oxygenated, the blood travels back to the heart.


  • It enters the left atrium via two right and two left pulmonary veins (four in total).


Why other options are incorrect:

  • The Superior Vena Cava, Inferior Vena Cava, and Coronary Sinus all drain oxygen-poor blood exclusively into 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.

Previous Question All Circulation / Transport MCQs Next Question

Want to solve full-length papers under timed exam conditions?

Practice with zero-scroll lockdown sprints, dynamic latency zone timers, live peer selection telemetry, and the automated Amber mistake recovery loop.

Enter Arena Sprint iOS App Android App