Biology Circulation / Transport MDCAT 2015
PMDC Verified Question 51 of 54
The flaps of tricuspid valves are attached to muscular extensions of right ventricle known as:
A
Smooth Muscles
B
Intercostal Muscles
C
Papillary Muscles
D
Skeletal Muscles
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Papillary Muscles
Concept:

The structural integrity of AV valves during ventricular contraction is maintained by an anchoring system.

Formula:

None

Solution:

  • The flaps (cusps) of the AV valves are anchored by fibrous cords called chordae tendineae.


  • These cords are tethered to cone-shaped muscular pillars projecting from the inner walls of the ventricles, called papillary muscles.


Why other options are incorrect:

  • Smooth/Skeletal Muscles: The heart is composed of specialized cardiac muscle, not general smooth or skeletal muscle.


  • Intercostal Muscles: Located between the ribs to assist in breathing.

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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