{"id":554,"date":"2017-05-08T23:11:47","date_gmt":"2017-05-08T23:11:47","guid":{"rendered":"http:\/\/blogs.vsb.bc.ca\/mcarmichae\/?p=554"},"modified":"2017-05-08T23:11:47","modified_gmt":"2017-05-08T23:11:47","slug":"bio-12-2016-17-lesson-48-action-potential","status":"publish","type":"post","link":"https:\/\/blogs.vsb.bc.ca\/mcarmichae\/2017\/05\/08\/bio-12-2016-17-lesson-48-action-potential\/","title":{"rendered":"Bio 12 (2016-17) Lesson 48 action potential"},"content":{"rendered":"

Biology 12 (16-17) L 48\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Date: May 8<\/p>\n

 <\/p>\n\n\n\n\n\n\n\n\n\n\n
Last lessons Objective<\/td>\n <\/p>\n

1.\u00a0\u00a0 Intro to Nervous System<\/td>\n

Evaluations<\/p>\n

 <\/td>\n<\/tr>\n

Today\u2019s Objective<\/td>\n1.\u00a0\u00a0 Review Neuron structures<\/p>\n

2.\u00a0\u00a0 Action Potential<\/p>\n

3.\u00a0\u00a0 Action Potential Sheets<\/p>\n

 <\/td>\n

 <\/td>\n<\/tr>\n
Topic One<\/td>\nIt is a neuron and not a nerve!<\/p>\n

Intro video<\/p>\n

https:\/\/www.youtube.com\/watch?v=DLN1UsvmVvM<\/a><\/p>\n

 <\/p>\n

Tricks: There are five distinct cell structures that allow you to classify three neuron types.<\/p>\n

Key questions:<\/p>\n

Were is the cell body?<\/p>\n

Which is longer, axon or dendrites?<\/p>\n

Which cell types have myelin<\/p>\n

 <\/p>\n

2 minute lesson<\/p>\n

https:\/\/www.youtube.com\/watch?v=6qS83wD29PY<\/a><\/p>\n

 <\/td>\n

 <\/td>\n<\/tr>\n
Topic<\/p>\n

Two<\/td>\n

How do you make a wave?<\/p>\n

Lets start with basic wave structures. You have a high point and a low point. On a y axis, this high and low in action potentials is in millivolts. Simplified, voltage is the amount of \u201cpush\u201d.<\/p>\n

 <\/p>\n

Bozeman https:\/\/www.youtube.com\/watch?v=HYLyhXRp298<\/a><\/p>\n

 <\/p>\n

So breaking it down into three steps there is<\/p>\n

Depolarization<\/strong><\/p>\n

Inside the actual neuron, the voltage is shifting from negative to positive. This is done by the inflow of sodium into the axon. Outside of the axon, the charge shifts from positive to negative. Note which way \u201cthe wave\u201d moves.<\/p>\n

Repolarization<\/strong><\/p>\n

Once the action potential reaches it\u2019s peak, then the charge needs to shift from positive to negative. Now, potassium moves out of the cell, shifting the voltage back to negative.<\/p>\n

Recovery Period<\/strong><\/p>\n

Now the cell become too negative and so some fine tuning is needed via active transport, to move some sodium in and at the same time move potassium out.<\/p>\n

So let\u2019s find some \u201clinks\u201d to visualize this process.<\/p>\n

A simple step by step video<\/p>\n

https:\/\/www.youtube.com\/watch?v=ZAmUjvgoO0A<\/a><\/p>\n

 <\/p>\n

Khan academy feedback<\/p>\n

https:\/\/www.khanacademy.org\/science\/biology\/human-biology\/neuron-nervous-system\/a\/depolarization-hyperpolarization-and-action-potentials<\/a><\/p>\n

 <\/p>\n

Entering \u201csodium gates\u201d<\/p>\n

https:\/\/www.youtube.com\/watch?v=qDUjVzVq7xE<\/a><\/p>\n

 <\/p>\n

Like this one<\/p>\n

https:\/\/www.youtube.com\/watch?v=ooI7xT59hE8<\/a><\/p>\n

 <\/td>\n

 <\/td>\n<\/tr>\n
Topic<\/p>\n

Three<\/td>\n

So here are some key focal points<\/p>\n

1)\u00a0\u00a0\u00a0 It is the movement of Sodium going into the cell and the movement of potassium going out of the cell that generates \u201cthe wave\u201d.<\/p>\n

2)\u00a0\u00a0\u00a0 This wave can be faster by moving from \u201cnode to node\u201d verses opening several gates in a sequence.<\/p>\n

3)\u00a0\u00a0\u00a0 Action potential starts with a specific electrical voltage within the axon. This is an all or nothing phenomena. You either have the initial voltage to start the wave or you have no message sent.<\/p>\n

4)\u00a0\u00a0\u00a0 This process involves four protein carriers. One is active transport during the recovery period.<\/p>\n

5)\u00a0\u00a0\u00a0 If you think you have seen this graph before, you are right. Remember the circulatory system?<\/p>\n

 <\/p>\n

 <\/td>\n

 <\/td>\n<\/tr>\n
Text Ref<\/td>\n <\/p>\n

 <\/p>\n

 <\/td>\n

 <\/td>\n<\/tr>\n
You tube<\/td>\n <\/p>\n

 <\/td>\n

 <\/td>\n<\/tr>\n
Class Notes<\/td>\nTypes of neurons.<\/p>\n

Action potential<\/p>\n

 <\/td>\n

<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Biology 12 (16-17) L 48\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Date: May 8   Last lessons Objective   1.\u00a0\u00a0 Intro to Nervous System Evaluations   Today\u2019s Objective 1.\u00a0\u00a0 Review Neuron structures 2.\u00a0\u00a0 Action Potential 3.\u00a0\u00a0 Action Potential Sheets     Topic One It is a neuron and not a nerve! Intro video https:\/\/www.youtube.com\/watch?v=DLN1UsvmVvM   Tricks: There are five distinct cell […]<\/p>\n","protected":false},"author":245,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-554","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/blogs.vsb.bc.ca\/mcarmichae\/wp-json\/wp\/v2\/posts\/554","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.vsb.bc.ca\/mcarmichae\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.vsb.bc.ca\/mcarmichae\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.vsb.bc.ca\/mcarmichae\/wp-json\/wp\/v2\/users\/245"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.vsb.bc.ca\/mcarmichae\/wp-json\/wp\/v2\/comments?post=554"}],"version-history":[{"count":1,"href":"https:\/\/blogs.vsb.bc.ca\/mcarmichae\/wp-json\/wp\/v2\/posts\/554\/revisions"}],"predecessor-version":[{"id":555,"href":"https:\/\/blogs.vsb.bc.ca\/mcarmichae\/wp-json\/wp\/v2\/posts\/554\/revisions\/555"}],"wp:attachment":[{"href":"https:\/\/blogs.vsb.bc.ca\/mcarmichae\/wp-json\/wp\/v2\/media?parent=554"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.vsb.bc.ca\/mcarmichae\/wp-json\/wp\/v2\/categories?post=554"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.vsb.bc.ca\/mcarmichae\/wp-json\/wp\/v2\/tags?post=554"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}