The elbow joint bends when the
a.
triceps muscle contracts.
c.
biceps muscle contracts.
b.
triceps muscle relaxes.
d.
biceps muscle relaxes.
Elbow joint bends when biceps muscle contracts.
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Asked 11/18/2015 7:38:55 AM
Updated 11/18/2015 8:03:30 AM
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Edited by
jeifunk [11/18/2015 8:03:29 AM], Confirmed by
jeifunk [11/18/2015 8:03:30 AM]
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