Explanation Reason for correct answer: Option C. is given as, “The nervous system is composed of separate cells.” Nerve cells or neurons are the basic units of nervous system, along with glial cells. Scientists observed thin fibers between one cell body and another. But whether the fibers united with the next cell or not, they were not able to comprehend. Italian scientist Camillo Golgi developed a new staining technique with silver salts, in which some cells could be stained without affecting the others, whereby study of a single cell became possible. Santiago Ramon y Cajal, with the help of this staining technique, researched on infant brain cells, where the cells are smaller and easier to examine. He showed that a small gap exists between the tip of the nerve fiber and the cell body of the next neuron. He discovered that the brain consists of individual cells and hence the nervous system is composed of separate cells . Hence, option C. is correct. Reason for incorrect answer: Option A...

The nervous system consists of two kinds of cells, neurons, and glia. Neurons receive and transmit information to other cells and glia has many functions. Santiago Ramon y Cajal, by using staining techniques, first observed that the nerve cells are individual cells and a small gap exists between two cells.

Biological Psychology (MindTap Course List)

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ISBN: 9781337408202

Author: James W. Kalat

Publisher: Cengage Learning

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Chapter 1.1, Problem 1EIQ

Summary Introduction

Introduction:

The nervous system consists of two kinds of cells, neurons, and glia. Neurons receive and transmit information to other cells and glia has many functions.

Santiago Ramon y Cajal, by using staining techniques, first observed that the nerve cells are individual cells and a small gap exists between two cells.

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