Biology Circulation / Transport MDCAT 2016
PMDC Verified Question 47 of 54
In human the closed sac which surrounds the heart is:
A
Endocardium
B
Pericardium
C
Myocardium
D
Epicardium
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: Pericardium
Concept:

The heart is enclosed in protective layers that reduce friction during contraction.

Formula:

None

Solution:

  • The pericardium is a double-walled sac containing the heart and the roots of the great vessels.


  • It provides lubrication via pericardial fluid, protecting the heart from friction and external shock.


Why other options are incorrect:

  • Myocardium: The muscular layer of the heart wall.


  • Endocardium: The inner lining of the heart chambers.

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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