Biology Support & Movement PMC 2020
PMDC Verified Question 64 of 75
Which one of the following are 'myogenic' type of muscles?
A
Smooth muscles
B
Skeletal muscles
C
Cardiac muscles
D
Glandular 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: Cardiac muscles
Concept:

Myogenic vs. Neurogenic muscle contraction.

Formula:

N/A (Conceptual)

Solution:

  • Myogenic means the contraction signal originates directly from within the muscle tissue itself, rather than requiring an external nerve impulse.


  • Cardiac muscles contain specialized pacemaker cells (the SA node) that spontaneously generate their own action potentials, allowing the heart to beat autonomously. Thus, they are highly myogenic.


Why other options are incorrect:

Skeletal muscles are neurogenic; they will not contract without a direct signal from a motor neuron.

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