Zoology-Muscle Contraction
NEET Zoology Muscle Contraction MCQ Question
Type: MCQ-fact-Hard-Class 11
What initiates the process of muscle contraction?
A
A signal from the central nervous system via a motor neuron
B
Release of lactic acid in the muscle fibers
C
Increase of oxygen levels in the muscle
D
Direct stimulation of the sarcoplasmic reticulum
Correct Answer
Option A
Detailed Explanation
Muscle contraction is initiated by a signal sent by the central nervous system (CNS) via a motor neuron, which is crucial for the activation of muscle fibers.
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