1. The Nervous System

2. Two Main Divisions Central Nervous System Peripheral Nervous System
Brain
Spinal Cord
Peripheral Nervous System
Nerves around the body
gathers and transmits information to and from the brain.

3. Peripheral Nervous System
Two Divisions
Somatic -
relationship with the external environment
sends info from sensory detectors to brain
Autonomic
involved in regulation internal functions
digestion, respiration, excretion, etc.

4. CNS - The Brain Three Main Parts Cerebrum Cerebellum Spinal Cord
About 83% brain mass
Grey Matter mm thick = cerebral cortex
White Matter -
Cerebellum
About 11% brain mass
Also has grey and white matter
Spinal Cord
Has grey matter surrounded by white matter

5. Cerebrum
Cerebellum
Spinal Cord

6. Complete Tree Map; Draw & Label the Nervous System on the Graphic Organizer