Royston, Angela.

Why do bruises change color? : and other questions about blood / Angela Royston. - Chicago, Ill. : Heinemann Library, c2003. - 32 p. : col. ill. ; 25 cm. - Body matters Heinemann infosearch .

Includes bibliographical references (p. 31) and index.

Why do cuts bleed? -- Why do cuts form scabs? -- Why do bruises change color? -- Why is blood red? -- Why do my feet get cold first? -- What does my heart do? -- What keeps my heart beating? -- What makes my heart beat faster? -- What causes a heart attack?

Answers common questions about blood and the circulatory system.

ISBN: 1403402027 (HC) 1403404577 (PB)

LCCN: 2002003543

Subjects--Topical Terms:
Blood.
Circulatory system.

LC Class. No.: QP91 / .R855 2003

Dewey Class. No.: 612.1/1