the heart is a hollow muscular __ located near the ___ and is protected by the rib___. it's size is about the size of your ___ . it is made up of___ muscles which is an example of an ___ muscle . it's function is to pump __ to the different parts of body . The blood carries the __ needed by the different parts of the body . if the heart will stop pumping, the person will ___.

die,fist, oxygen,blood, cage, involuntary

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