Science+19

9/24/09 - Nervous System

Central Nervous System
 * Brain - gets and sends signals around the body. Major Control Center of body.
 * Spinal Cord- is protected by spine connects to the brain and the rest of the nervous system

Peripheral Nervous System
 * Nerves- Travel through body connect the spinal cord to sensors throughout the body

Voluntary Actions
 * Things you think about doing-walking,reading,bike riding

Autonomic [Involuntary Actions]
 * Things that you think about not doing-Breathing,Response to Danger, Blinking

Brain Cerebrum Cerebellum
 * Most important part our body
 * Protected by skull and three layers of tissue
 * two halves-right side is creativity music,art;Left side is math,logic,speech,writing
 * right side of brain controls left side of body Left side of brain controls right side of body
 * For balance
 * Muscle Coordination

Medulla
 * Controls heartbeat,breathing