The heart is a cone-shaped muscular organ located within the of the thorax. its apex rests on the and its superior margin lies at the level of rib. approximately two-thirds of the heart mass is seen to the left of the heart is enclosed in a serosa sac called the. the heart has chambers. relative to the roles of these chambers, the are the receiving chambers, whereas the are the discharging chambers.
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The heart is a cone-shaped muscular organ located within the of the thorax. its apex rests on the...
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