Biology 1002B Lecture Notes - Lecture 18: Chromosome, Reverse Transcription Polymerase Chain Reaction, Rhizobium

• School: Western University
• Department: Biology
• Course: Biology 1002B
• Professor: Tom Haffie

Document Summary

Basic mechanism of propagation of action potentials in neurons. Propagaion: reproducion or recreaion of something: to create acion potenials in neurons, we have to create either a diference (concentraion or charge) across the membrane, nerve membrane can me permeablized to let ions in. Depolarize the hyperpolarized membrane by leing posiive ions across the membrane, then the acion potenial will coninue to ire. Propagaion of an acion potenial along an unmyelinated axon by ion low between a iring segment and an adjacent unired region of the axon. Each iring segment induces the next to ire, causing the acion potenial to move along the axon. Since molecules with opposite charge are atracted to one another, as the charge on the membrane reverses during the acion potenial, this will cause neighbouring ions with opposite charge to be atracted to the site. Tradiionally this is illustrated as posiive charge moving toward sites with negaive charge. How channelrhodopsin can control action potentials in neurons.