Human Body Systems
Learn about basic human body systems
Systems Inside Our Body
Our body has different systems that work together to keep us alive. The skeletal system (bones) holds our body up. The muscular system (muscles) helps us move. The digestive system breaks down the food we eat into energy.
Example
How Systems Work Together
When you kick a ball, your brain sends a message through your nerves. Your muscles pull on your bones to move your leg. Your heart pumps blood faster to give your muscles extra energy. All these systems work together!
Note
Remember
Eating healthy food, drinking water, and exercising every day helps all your body systems stay strong and work properly.
Key Vocabulary
SkeletonAll the bones in your body that give you shape and support
MuscleA part of the body that pulls on bones to make you move
Digestive systemThe body parts that break down food so your body can use it
OrganA part of the body with a special job, like the heart or lungs
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Skeleton
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