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

asked Jun 27, 2018 3.6k views

3 votes

When you flex or use a muscle, the _____.

muscle fibers relax
blood flow decreases
muscle fibers slide apart
myofibrils slide together

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4 votes

The answer is "myofibrils slide together." This is correct, because I got it correct on my lesson. Have a great day!

Glethien answered Jul 3, 2018

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