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Biology 14 Online
OpenStudy (anonymous):

Which muscle controls the contractions of the heart?

OpenStudy (anonymous):

The heart is composed of it own specail kind of muscle. IE cardiac muscle The contraction is controlled by nodal cells which are unique in the body.

OpenStudy (koikkara):

Hello My Dear Friend, @gracej WelcoMe To OpeN studY !! Hope, if U Are Satisfied with @AllanO-the-great answer, please Close This Question ! Ref: http://health.howstuffworks.com/human-body/systems/musculoskeletal/muscle4.htm Thank U !! Keep In Touch with Open study !!

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