Nervous System Lessons
Lesson 3 - Nerve Impulse
In this lesson you will learn about
1. Watch this video to learn about how stimuli are transmitted through a neuron. *Note: in this video he uses the number 30mV for when repolarization occurs. We use the number 35mV, as that is the number in our textbook.Â
2. Once you've watched the video answer the questions from this document. These questions will help make sure that you correctly understand the information from the lesson.
3. Read Chapter 11 pages 373-377 from the textbook for a deeper understanding of this material.
This PowerPoint outlines all the main points that you need to know from this lesson. You can use this PowerPoint as a review when you revisit this information at a later date.
Self Assessment Section. Have you come away from the lesson knowing all of the things that you need to know?
i) I can define this list of words:Â
refractory period | threshold potential | repolarization |
membrane potential | resting membrane potential | nodes of Ranvier |
depolarization | hyperpolarization | action potential |
polarization | sodium-potassium pump |
ii) I can describe a whole action potential starting with the stimulus causing depolarization, ending with the neuron being polarized after the action potential has passed.
4. Once you have learned the information from this lesson, complete the assignment Action Potential