To raise an arm upward, the muscle on one side of it contracts.
What happens to the musc...
Health, 23.04.2020 03:12 lilmaddy8856
To raise an arm upward, the muscle on one side of it contracts.
What happens to the muscle on the opposite side of the arm?
contracts
relaxes
both contracts and relaxes
neither contracts nor relaxes
Answers: 1
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