38 Respiratory System Helps you breathe Important parts: mouth, lungs, noseWe breathe in OXYGEN and out carbon dioxide
39 Circulatory System Pumps blood throughout your body The “pump” is the heartImportant parts: heart, blood vessels, veinsYou can feel your circulatory system by checking your pulse in your neck or on your wrist
40 Skeletal System Made up of our BONES Helps us to stand, stay upright, and move aroundWe have 206 bones in our bodies!
41 Muscular System Made up of muscles. We have 640 muscles in our bodies! They push and pull on bones to help us move.
42 Nervous System Made up of our BRAIN, SPINAL CORD, and nerves Also our 5 senses (how we take in information)Messages about what we feel travel from our bodies to our brains and our brain sends back messages about how to react (move away if something is hot)
43 Digestive SystemIMPORTANT PARTS: mouth, throat, stomach, small and large intestineHelps us to break down food after we eat and use the vitamins in it to keep us healthy
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