Action Potential

Dwayne Culver

Lab Report 1

Biol 2401



Eliciting a Nerve itch (Frog Sciatic Nerve)

Introduction

Whenever a look cellular phone necessarily to send a message to any part of the soundbox (animals or humans), something called an carry through potential is generated. This is a temporary lurch in galvanising potential that occurs between the inside and the out of doors of a nerve when a nerve impulse is transmitted. During the action potential, part of the neural membrane opens to allow positively supercharged ions inside the cell and negatively charged ions out. This process causes a rapid increase in the positive charge of the nerve fiber. This electrical impulse is carried down the nerve through a series of action potentials. In the following experiments I investigated how electrical stimuli would elicit a nerve impulse (action potential) and the effects of the toxin curare and lidocaine. In the first experiment I simply employ a measured, electrical stimulus to the sciatic nerve from a frog until I reached a point called scepter. Once threshold was reached, the action potential was generated and could non be stopped overdue to it being an all or nothing phenomenon. I could therefore measure and record the results using the oscilloscope.



The oscilloscope also helped us to determine the difference in charge across the cell membrane, or the resting membrane potential (RMP). Since nerve cells real rest of many neurons, the action potential I tested is actually referred to as a compound action potential. This simply way of life that I measured the action potentials of all the neurons in the nerve, not just one. By learning what is too much or too little of a stimuli and putting precise measurements to such(prenominal) findings I can learn more about the privileged working of our nerve cells and neurons I hope to show , or explain, what exactly causes a the all or nothing phenomenon cognize as the action potential.

The second experiment was very identical to first,...If you want to get a full essay, order it on our website: Orderessay



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