Biology Support & Movement NUMS 2023
PMDC Verified Question 33 of 75
Which feature is absent in cardiac muscles?
A
Intercalated discs
B
Multinucleated cells
C
Light and dark bands
D
Contractile sarcomeres
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: Multinucleated cells
Concept:

Differentiating cardiac vs. skeletal muscle.

Formula:

N/A (Conceptual)

Solution:

  • Cardiac muscles are highly specialized, branching cells linked by intercalated discs. They contain sarcomeres resulting in light and dark bands (striations).


  • However, unlike skeletal muscles which fuse into massive fibers with hundreds of nuclei, cardiac muscle cells are almost always distinctly uninucleate (or occasionally binucleate). Thus, the classic multinucleated state is considered absent.


Why other options are incorrect:

Intercalated discs, sarcomeres, and distinct banding patterns are all hallmark, highly visible features of cardiac tissue.

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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