CENTRAL NERVOUS SYSTEM
EXCRETORY SYSTEM
PERIPHERAL NERVOUS SYSTEM
Transports blood all over the body
Takes the oxygen we need from the air and expels the carbon dioxide
internal stimulus
Transforms food into simpler substances that your body can use.
is made up of the encephalon and the spinal cord
External stimulus
cleans the blood of waste products
Is made up of sensory and motor nerves
motor response
glandular response