Biology, 12.06.2020 00:57 Yomarie1104
How does the muscular system help humans maintain posture?
A. Muscles continually align themselves vertically to help maintain posture.
B. Muscles continually push bones to be straight.
C. Muscles constantly contract and relax to help fight gravity.
D. Muscles constantly contract and relax to help work with gravity.
Answers: 2
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How does the muscular system help humans maintain posture?
A. Muscles continually align themselves...
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