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dusya [7]
3 years ago
9

When you flex or use a muscle, the _____. muscle fibers relax blood flow decreases muscle fibers slide apart myofibrils slide to

gether?
Health
2 answers:
12345 [234]3 years ago
8 0

The answer is:

The myofibrils slide together

hodyreva [135]3 years ago
5 0
Myofibrils slide together. 

the other options don't make sense, and the myofibrils sliding together is the mechanism the muscle uses to generate force.
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