1. Nervous System

2. Central Nervous System
Consists of brain and spinal cord.
Control center of the body
Interprets and responds to information from the environment and from within the body

4. Peripheral Nervous System
Sensory neurons
Send information from sense organs
Motor neurons
Send commands from the CNS to muscles and other organs

5. Brain Stem Relay information throughout the CNS
Play a role in in homeostasis by regulating vital functions
Heart rate, breathing rate, body temperature, and sleep
Hypothalmus
Regulates endocrine system

6. Sympathetic Nervous System
Physical and emotional stress
Fight-or-flight response
Increases blood pressure, heart rate, and breathing rate