Nervous System

Nervous System
Includes:

Brain
Spinal Cord
Retina and optic nerve
Peripheral nerves

What it Does:

The nervous system is the communication pathway for the body, sending messages between different parts via electrical and chemical processes. It responds to changes both outside and inside the body and coordinates voluntary movements, receives external stimuli, including hearing, touch and sight as well as controlling heart rate, digestion, breathing, salivation, perspiration, pupil diameter, urination and sexual arousal. 

What Could go Wrong:

Multiple Sclerosis
Parkinson’s Disease
Alzheimer’s
Epilepsy
Stroke
Shingles
Migraines