About This Chapter
Human Nervous System Overview - Chapter Summary
In this chapter, you have the opportunity to access short bits of information that can enhance your knowledge of components and structures of the nervous system. You will learn the meanings of complex terms and review examples that will help clarify the information presented in these video and text lessons. Details about the central nervous system, stimuli, the brain and the eye are covered. Once you are finished with this chapter, you should be able to do the following:
- Discuss basic functions of the nervous system
- Identify parts of the central nervous system and relate what each part does
- Define different types of reflexes
- Describe how sensory neurons respond to different stimuli
- Name various parts of the brain
- Note types and symptoms of brain damage
- Discuss parts of the eye and their functions
- Relate terms associated with actions of the eye
- List types of refractory disorders
- Describe terms associated with corrective vision treatments and procedures
Brief lessons present each topic in short bits of information designed to keep you focus and engaged. Lessons can be viewed as many times as needed and transcripts printed for quick reference. Take self-assessment quizzes to determine whether you need further review or have mastered a specific topic and are ready to move on to the next lesson.
1. Nervous System Overview: Central & Peripheral
What happens in your nervous system when you react to stimuli? Did you know that the brain is sometimes uninvolved with reflexes? Find out the answer to these questions, and more, in this lesson on the human nervous system.
2. 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.
3. Reflex: Definition, Types & Examples
In this lesson, you will learn about reflexes in the human body. Different types of reflexes will be discussed and examples will be provided when appropriate. Finally you will be able to test your knowledge of the content by taking the quiz.
4. Adequate Stimulus for Sensory Receptors
This lesson will describe the basics of how your sensory receptors communicate with your brain. Readers will discover which types of stimuli trigger different sensory neurons and what the adequate stimulus for a particular sensory neuron is.
5. Parts of the Brain
Is there a way to easily remember the many parts of the brain? Don't be afraid of all these complex terms; this lesson outlines some easy and fun phrases to help you memorize the brain's anatomy. Let's take a look.
6. Brain Damage: Signs & Symptoms
The brain is central to the proper function of the entire body, therefore, damage to the brain directly effects the entire body and immediately becomes a 'big deal.' In this lesson, we will discuss the types and symptoms of brain damage; we will also explore how to prevent and treat brain damage.
7. Parts of the Eye and their Functions
Do you know the parts of the eye? If not, this lesson will help you to identify the parts of the eye and understand their specific functions. After learning about the eye, you will be able to test your knowledge with a quiz.
8. Actions of the Eye
This lesson goes over some of the normal actions of the eyes with respect to vision: visual acuity, convergence, accommodation, emmetropia, and refraction.
9. Refractive Disorders of the Eye: Vocabulary
Are you nearsighted? Farsighted? Neither? All three conditions actually have really weird technical terms. This lesson goes over them as we take a look at refractive disorders.
10. Cataracts, Lenses & Laser Eye Treatment Vocabulary
Sound waves, light waves, and just plain surgery can all be used to correct your vision. Whether it's the famous LASIK or phacoemulsification, this lesson defines many of these corrective procedures that help a person see better.
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