Choose the correct word for the blanks of passage -

About 60 percent of the human body is water! If you could (1) ______ out a human being like a lemon you would obtain about 50 liters of (2) ______. This water, which is not like common water because of the substance it dissolves, is necessary to the life of the (3) ______ about a gallon of it is in the blood vessels and is (4) ______ circulating by the heart. This liquid bathes all the cells of the body in a (5) ______ stream. The water also acts as a conductor of heat through the body.