Learning Resources Body Guide page 6

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brain part of the nervous system that is the control
center for the entire body and all of its functions
skull part of the skeletal system that
protects the brain from injury; makes up the
general structure of a person's head
heart the main organ of the circulatory
system that constantly moves and pumps blood
throughout the entire body
rib cage part of the skeletal system that protects
many internal organs including the heart and lungs
lungs part of the respiratory system that supplies
oxygen from the air to our blood and removes
carbon dioxide from our blood to the air
liver the largest internal organ, which aids
digestion, controls metabolism, and removes
harmful substances from blood
stomach part of the digestive system that
contains acid to help break down food for the
body to absorb