Zoology-Muscle Contraction
NEET Zoology Muscle Contraction MCQ Question
Type: MCQ-diagram based-Easy-Class 11
Consider a diagram showing a muscle fiber with labelled structures. Which label corresponds to the sarcoplasmic reticulum that stores calcium ions essential for muscle contraction?
A
A: A network surrounding myofibrils
B
B: The plasma membrane covering the fiber
C
C: The fluid inside the fiber
D
D: The dark bands in myofibrils
Correct Answer
Option A
Detailed Explanation
The sarcoplasmic reticulum is the endoplasmic reticulum of muscle fibers and acts as a storehouse for calcium ions, which is crucial for muscle contraction.
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