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