PY 101 Chapter 8-9: Module 8 & 9

• School: University of Alabama
• Department: Psychology
• Course: PY 101
• Professor: Tammi Carroll

Document Summary

Central nervous system- composed of the brain and spinal cord o. Spinal cord- a bundle of neurons that leaves the brain and runs down the length of the back and is the main means for transmitting messages between the brain and the body. Reflex- an automatic, involuntary response to an incoming stimulus. The nervous system- consists of the brain and the neurons extending throughout the o. Peripheral nervous system- made up of long axons and dendrites, it contains all parts of the nervous system other than the brain and spinal cord. Somatic division- specializes in the control of voluntary movements and the communication of information to and from the sense organs. Autonomic division- concerned with the parts of the body the function involuntarily without our awareness. Sympathetic division- acts to prepare the body in stressful emergency situations, engaging resources to respond to a threat.