. "Juvenile works" . "Juvenile works"@en . . . . "\"Describes the anatomical design features of the human circulatory system, the heart blood vessels, and the blood, in addition to the functions they serve\"--Page 4 of cover." . . . . . "The Circulatory System"@en . . "Discusses what the circulatory system is, how it works, and how it responds to exercise and hemorrhage."@en . . . . . . "The circulatory system" . "The circulatory system"@en . . "Electronic books"@en . . "Describes the anatomy and functions of the human circulatory system and how it responds to increased activity, the microgravity of space, and other changes."@en . . . . . "This book describes the anatomical features of the circulatory system and examines how it responds to a broad range of challenges." . "Cardiovascular system." . . . . "JUVENILE NONFICTION Concepts Body." . .