X1014345948-00169-36803</DOCNO> The Heart- for Children THE HEART Our HEART is a hollow muscle that pumps blood through blood vessels throughout our body.
(THE HEART; is; a hollow muscle that pumps blood through blood vessels throughout our body) (a hollow muscle; pumps; blood)
THE HEART a hollow muscle
is pumps
a hollow muscle that pumps blood through blood vessels throughout our body
blood