Chapter 19, Problem 1CTQ

(a)

Summary Introduction

To explain:

The reason behind describing nervous system as “immunologically privileged” and whether being immunologically privileged site of brain is beneficial or disadvantageous.

Concept introduction:

The central region of the human nervous system is the brain. The brain is the controlling and the regulatory center of the activities performed by the body. It works by coordinating, integrating, and processing the information relayed from the sense organs.

(b)

Summary Introduction

To discuss:

The defenses encountered by the pathogen as it attempts to gain entry into the nervous system.

Concept introduction:

The nervous system is comprised of two different components, namely central nervous system and peripheral nervous system. The central nervous system is comprised of spinal cord and brain and peripheral nervous system consists of nerves which originate from the spinal cord and brain.