Module 1 The Nervous System
Lesson 1.1.7
Lesson 7: The Nerve Impulse—Transporting the Message
Get Focused
Your cell phone is ringing—how did you know?
© Sebastian Kaulitzki/shutterstock
© Ricardo Verde Costa/shutterstock
At this point in the unit you should be aware that the retina in your eye and the cochlea in your ear are detecting the flashing light and the ringing noise. You have learned that the sense organs are responsible for detecting changes in the environment and communicating this information to the brain. You now know that the neuron facilitates communication through sensory pathways that connect sensory receptors to the lobes of the brain. Interneurons and motor neurons also play a role in processing information and communicating information to the effectors.
In this lesson, you will explore how this special type of cell, the neuron, which makes up the pathways and structures of the nervous system, communicates messages through its cell structure.
You will also examine how communication is interrupted by diseases such as multiple sclerosis.
Once you have completed all of the learning activities for this lesson, you can complete the online assignment.
Here is a tutorial video for this lesson that you can watch if it suits your learning style. Bio30 tut#1.1.7
** The Self-Check and Try This questions throughout this lesson are not marked by the teacher; however these questions provide you with the practice and feedback that you need to successfully complete this course. **