Blood! Not just a vampire drink

"This funny and fact-filled picture book is all about blood: where it's found, what it does, how it travels, and why vampires shouldn't drink it. From the four chambers of the heart to the platelets that clot your blood when you scrape your knee, everything you want to know about the cardiovascular system is right inside these pages. Just watch out for thirsty vampires"--Provided by publisher.