It is now time to meet the system that helps your crazy brain stay in touch with the outside world. We follow up last week's tour of the central nervous system with a look at your peripheral nervous system, its afferent and efferent divisions, how it processes information, the reflex arc, and what your brain has to say about pain.

Table of Contents
Peripheral Nervous System 0:38
Afferent and Efferent Divisions 5:42
Information and Responses to Pain 3:12
Five Steps of the Reflex Arc 4:35
Different Kinds of Reflexes 6:44
What the Brain Says About Pain 8:09


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