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Ch 4: Understanding The Nervous System

About This Chapter

Use several video lessons to reinforce what you know or learn new information about the human nervous system. Review term and system definitions and functions with examples and illustrations to enhance your learning experience.

Understanding the Nervous System - Chapter Summary

The lessons in this chapter are designed to provide brief but informative overviews of the various components of the central nervous system. You will study the functions of these structures, their importance and different types of specific parts such as neurons and nerve cells. After you have completed your review of this chapter, you will have a better understanding of the following:

  • The parts of the central and peripheral nervous systems
  • Neuron types, structures and roles
  • What the myelin sheath, Schwann cells and nodes of Ranvier do
  • The role of neuroglia
  • Responsibilities of nerve cells

Taught by such professionals as biology teachers and nurse educators, these lessons highlight details about the most important parts and roles of the nervous system using simple language and supportive illustrations. Self-assessment quizzes allow you to demonstrate your full knowledge of these topics and recognize areas in which you might need further review. Easily track your progress through this chapter using a convenient Dashboard.

7 Lessons in Chapter 4: Understanding The Nervous System
Test your knowledge with a 30-question chapter practice test
Central Nervous System: Definition, Function & Parts

1. Central Nervous System: Definition, Function & Parts

The body is divided into many systems. In this lesson, you will learn about the parts that make up the nervous system and their functions to gain a better understanding of this critical system.

Peripheral Nervous System: Definition, Function & Parts

2. Peripheral Nervous System: Definition, Function & Parts

The human nervous system is very complex with many interactive units that are changing constantly to reflect human behavior and activity. This lesson focuses on the peripheral nervous system, including its function and parts.

The Structure and Function of Neurons

3. The Structure and Function of Neurons

In this video lesson, you'll learn about neurons, which are specialized cells in the nervous system. Check out how far neurons can send signals throughout the body and how depolarization is much like 'the wave' at a football game.

Types of Neurons: Sensory, Afferent, Motor, Efferent & More

4. Types of Neurons: Sensory, Afferent, Motor, Efferent & More

There are many types of neurons in your body that help you see, smell, hear, and move. In this lesson, you'll learn more about afferent, efferent, sensory, and motor neurons.

The Myelin Sheath, Schwann Cells & Nodes of Ranvier

5. The Myelin Sheath, Schwann Cells & Nodes of Ranvier

The myelin sheath is an essential part of our nervous system. Learn more about this neuron component, explore the nodes of Ranvier, and discover why Schwann cells are crucial for neuron survival.

Neuroglia: Function & Definition

6. Neuroglia: Function & Definition

In this lesson, you'll learn about the unsung heroes of your nervous system. These cells don't get a lot of attention, but without them, it would be difficult for your neurons to do their job and protect themselves against invaders.

What Are Nerve Cells? - Function, Types & Structure

7. What Are Nerve Cells? - Function, Types & Structure

Nerve cells are the primary cells in the nervous system. They are responsible for relaying electrical messages to cells and tissues in other organ systems. This article discusses the functions and structures of nerve cells in the human body.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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