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Biological muscle contraction relaxation of the problem

Less en 20122010-04-01 10:11:00 +0000 #1
started this final exam: outstretched arm bumped into hot objects, and asked: How do the biceps and triceps activity?
black eye rookie2010-04-01 10:15:06 +0000 #2
to retract it? Biceps contraction, triceps relaxation.
6357734522010-04-01 10:48:15 +0000 #3
to the retraction

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