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Title: The heart has four chambers, two small thin-walled atria and two large muscular Post by: nite_n_day on Jun 24, 2013 The heart has four chambers, two small thin-walled atria and two large muscular ________.
Title: Re: The heart has four chambers, two small thin-walled atria and two large muscular Post by: doseofmegan on Jun 24, 2013 I think it might be ventricles, but I'm not sure.
Title: Re: The heart has four chambers, two small thin-walled atria and two large muscular Post by: nite_n_day on Jun 25, 2013 Thanks :D
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