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What happens to the A band of a sarcomere when a muscle… | StemPy Lab
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What happens to the A band of a sarcomere when a muscle contracts?
Biology
Easy
High School (11–12)
Human Body › Locomotion and Movement
Created by
StemPy Lab
What happens to the A band of a sarcomere when a muscle contracts?
It gets shorter
It keeps its length
It disappears
It gets longer
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← From where are the calcium ions released that start a contraction?
In a small hand muscle, each motor neuron controls 85 fibres. A student closes her fist, and 6 of these neurons fire. No fibre is shared between neurons. How many fibres contract? →
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Human Body › Locomotion and Movement
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Created by StemPy LabCreated by StemPy Lab