Matching Pairs Body partsOnline version You need to find pairs and match by say_yaa 1 Circulatory System 2 Nervous System 3 Respiratory System 4 Skeletal System 5 Digestive System – 6 Muscular System The heart pumps blood to all parts of our body." We breathe in oxygen through our lungs. Oxygen helps us stay alive!" The brain sends messages to our body, telling it what to do "Muscles help us move. They pull on bones to make us run, jump, and smile!" Our bones give shape and support to our body. Without bones, we would be like jelly!" "Our stomach and intestines break down food so our body gets energy."