1 / 9

Electrochemical Impulse Aka: An Action Potential

Electrochemical Impulse Aka: An Action Potential. By: Rita Kumar. Discovery of electrochemical impulses. Luigi Galvani. K.S. Cole. Julius Bernstein. Sodium Potassium Pump. Steps in an Electrotonic Potential.

apollo
Download Presentation

Electrochemical Impulse Aka: An Action Potential

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Electrochemical ImpulseAka: An Action Potential By: Rita Kumar

  2. Discovery of electrochemical impulses Luigi Galvani K.S. Cole Julius Bernstein

  3. Sodium Potassium Pump

  4. Steps in an Electrotonic Potential • There are voltage gated ion channels for sodium and channels for potassium ions. • A stimulus forces a Na+ channel open. • Sodium ions flow into the cell • The voltage across the membrane will increase • When the voltage reaches its threshold potential, other voltage gated ion channels are stimulated, and they open as well • Electrotonic potentials faster than action potentials. • The effect of electrotonic potential decrements the further down the cell you go.

  5. Steps in an Action Potential

  6. Saltatory Conduction • Saltatory conduction is facilitated by the myelin sheath. • Rather than having an action potential travel all the way down the axon, it “jumps” from node to node. • Much faster than action potential across an unmyelinated nerve. • Factors affecting saltatory conduction: • Neuron size: Bigger neuron, faster conduction

  7. Function of Intracellular Structures in Saltatory Conduction

  8. What Does It Do For the Body? • The purpose of electrochemical impulse is to pass a stimulus-generated impulse down the neural axon to a receptor, be it another neuron or a muscle. • The passing of electrochemical impulses allows for organisms to recall, feel, think, emote, hear, see, etc. • Without proper nerve conduction, diseases such as multiple sclerosis may occur.

  9. Works Cited List • "Electrotonic and Action Potentials." YouTube. 11 Feb. 2010. Web. 22 Jul 2013. • “Sodium Potassium Pump." YouTube, 11 Feb. 2010. Web. 22 Jul 2013. • "What Is the Saltatory Conduction?" wiseGeek. n.p., n.d. Web. 22 Jul 2013 • "Electrotonic and Action Potentials." Khancademy. Salman Khan, n.d. Web. 22 Jul 2013. • “Electrochemical Impulse.” N.p., n.d.22 Jul 2013. http://members.shaw.ca/ciwalker2/Electrochemical%20Impulse.pdf • “Kenneth Stewart Cole.” Wikipedia. N.p., n.d.Web. 22 Jul 2013 • “Luigi Galvani (1737 - 1798).” Battery Facts. N.p., n.d. Web. 22 Jul 2013. • “The Nervous System.” Anatomy Student Pages. Brown, Seth and Keogh, Mackenzie, n.d.Web. 22 Jul 2013. • “Schwann Cell.” Encyclopaedia Brittanica. N.p., n.d. Web. 22 Jul 2013. • “Recognizing Multiple Sclerosis Symptoms”. WebMD. N.p., n.d. Web. 22 Jul 2013

More Related