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Sexuality and Psychology

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Submitted By bridgit03
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Anatomy of the
Nervous System

3

Systems, Structures, and Cells That Make Up
Your Nervous System

3.1

General Layout of the Nervous System

3.4

Spinal Cord

3.2

Cells of the Nervous System

3.5

Five Major Divisions of the Brain

3.3

Neuroanatomical Techniques and Directions

3.6

Major Structures of the Brain

ISBN 0-558-78571-9

Biopsychology, Eighth Edition, by John P.J. Pinel. Published by Allyn & Bacon. Copyright © 2011 by Pearson Education, Inc.

3.1 ■ General Layout of the Nervous System

I

n order to understand what the brain does, it is first necessary to understand what it is—to know the names and locations of its major parts and how they are connected to one another. This chapter introduces you to these fundamentals of brain anatomy.
Before you begin this chapter, I want to apologize for the lack of foresight displayed by early neuroanatomists in their choice of names for neuroanatomical structures— but, then, how could they have anticipated that Latin and
Greek, universal languages of the educated in their day, would not be compulsory university fare in our time?
To help you, I have provided the literal English meanings of many of the neuroanatomical terms, and I have kept this chapter as brief, clear, and to the point as possible, covering only the most important structures. The payoff for your effort will be a fundamental understanding of the structure of the human brain and a new vocabulary to discuss it.

51

Central nervous system Peripheral nervous system 3.1
General Layout of the
Nervous System

ISBN 0-558-78571-9

Divisions of the Nervous System
The vertebrate nervous system is composed of two divisions: the central nervous system and the peripheral nervous system (see Figure 3.1). Roughly speaking, the central nervous system (CNS) is the division of the nervous

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