list the 5 main organ systems?
digestive system,respiratory system, skeletal system, excretory system, circulatory system
what organ pumps blood?
heart
what organ is used to see?
eyes
what organ is used to breathe?
lungs
what does liver do?
processes foods
what does a brain do?
stores information in your head
what organ is used to digest food?
stomach
how many kidneys do most people have?
2
what does a kidney do?
removes waste and extra junk from the body