Biology Support & Movement KMU 2024
PMDC Verified Question 11 of 75
The ____ surrounds the muscle fibre of the skeletal muscle.
A
Cytoplasm
B
Lacunae
C
Myofibrils
D
Sarcolemma
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: Sarcolemma
Concept:

Outer boundary terminology of muscle cells.

Formula:

N/A (Conceptual)

Solution:

  • A skeletal muscle fiber is simply a single, massive, elongated muscle cell.


  • Like all cells, it requires an outer plasma membrane to separate its interior from the extracellular environment and to conduct electrical impulses.


  • In muscle biology, this specialized surrounding membrane is universally termed the Sarcolemma.


Why other options are incorrect:

Myofibrils are the internal contractile rods. Cytoplasm (sarcoplasm) is the fluid inside. Lacunae are the bone/cartilage cavities.

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 Support & Movement 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