Your Hardworking Heart and Spectacular Circulatory System
YORILLIAN YOUR SWORKING HAHEART and E SPECTACULAR Circulatory System FIND OUT HOW YOUR BODY WORKS Paul Mason Crabtree Publishing Company www crabtreebooks com
A Crabtree Publishing Company www crabtreebooks com 1 800 387 7650
Each living organism is made of tiny building blocks called cells Your heart is made of Specialized cells called cardiac muscle cells CONTENTS YOUR THUMPING HEART HEART PARTS WHAT MAKES A HEART BEAT 10 BLOOD AND IRON WHAT COLOR IS YOUR BLOOD SINUT TYPES OF BLOOD BLOOD VESSELS 16 THE BODY S DELIVERY SERVICE 18 Heart tissue is made of millions of cardiac muscle cells connected together 20 THE BODY S GARBAGE SERVICE DEFENSE AGAINST MICROBE ATTACKS 22 YOUR CIRCULATION OUT OF THIS WORLD 24 26 HELPING HEARTS Your heart is made of cardiac muscle tissue It is the main organ in your circulatory system 28 MAINTENANCE AND SERVICING 30 HEARTY WORDS HEARTY INFORMATION 32 INDEX Your circulatory system runs through your whole and nutrients and Oxygen body de Vivering tak waste
