When do muscles contract?
Monday, January 4th, 2010 at
10:47 am
Which is the best answer, sorry if this looks like homework im tryin to study for a test
thnx in advance
which one:
a.actin and myosin slide over eachother
b.cross-bridges form between Z-discs and connect them
c.tendons pull on muscle fibers causing them to contract
d.bundles of muscles fibers push on two adjacent bones
(I buying drugs online think its c)

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