2015-03-30

[public] 2.17M views, 30.2K likes, 414 dislikes audio only

CrashCourse

It is now time to meet the system that helps your 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.

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Chapters:

Introduction: Peripheral Nervous System 00:00

Sensory Nerve Receptors: Thermoreceptors, Photoreceptors, Chemoreceptors, Mechanoreceptors, and Nociceptors 0:56

What is Pain? 1:54

How Pain is Processed 2:51

Pain Threshold vs Pain Tolerance 3:50

How the Brain Processes Pain 4:25

Afferent and Efferent Divisions 5:42

Five Steps of the Reflex Arc 6:38

What the Brain Says About Pain 8:09

Review 9:09

Credits 9:39

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