The_____is a hollow muscular organ. Its size is the same as your _____and located in middle of the chest cavity it contract so as to push ______out of the heart to every parts of the body the heart is a powerful organ of the _______system It continues pumping blood as long as the person is alive it pumps _______ passing though its passgeway called the blood ______B.blood the____is referred to as the "red river of the _____because it delivers vital_______and essential things such as ______ to the different parts of the body Aside from this it carries away wastes products like ______ and excess water for excretion C.BLOODVESSELS ______are tubes that serve as ______ for blood to reach the different parts of the body there are three kinds of blood vessels the _____the______and the____
