Chapter 1 THE BODY’S SUPPORT Bones make up the body’s skeletal system You cannot see your bones But you can feel them under your skin Bones support and protect your body the way an umbrella’s ribs support it You have bones in all parts of your body What do bones do 4
Bones are hard and strong Most other parts of the body are soft Bones hold up your body and give it structure IF YOU HAD NO BONES YOU COULD NOT RUN JUMP OR DO CARTWHEELS 5
Bones and Muscles Bones and muscles work together Muscles pull bones to make them move Muscles attached to your arm and leg bones help you run or throw a ball Muscles attached to your finger bones help you write or pick up a spoon Some bones protect organs inside your body Your skull protects your brain Your ribs form a cage around your heart and lungs Your hip bones protect organs in the lower part of your body The muscles and bones of your hand work together to help you draw 6
Chapter 2 ALL ABOUT BONES Bones come in many sizes Your smallest bone is in your ear This bone is only about as big as a sesame seed Your longest bone is in your upper leg This bone is about one-fourth of your total height Your bones help you stand up straight and tall Where is your longest bone 7
