Biology Forums - Study Force

Biology-Related Homework Help Anatomy and Physiology Topic started by: jdmking18 on Sep 3, 2011



Title: Physioex 9.0 ex. 3, act. 4 help
Post by: jdmking18 on Sep 3, 2011
A nerve is a bundle of axons, and some nerves are less sensitive to lidocaine. If a nerve, rather than an axon, had been used in the lidocaine experiment, the responses recorded at R1 and R2 would be the sum of all the action potentials (called a compound action potential). Would the response at R2 after lidocaine application necessarily be zero? Why or why not


Title: Re: Physioex 9.0 ex. 3, act. 4 help
Post by: duddy on Sep 4, 2011
Firstly, it's important to understand that lidocaine is a sodium channel antagonist and will block sodium ion channels from working, preventing the generation of an action potential. So, I'd say no.


Title: Re: Physioex 9.0 ex. 3, act. 4 help
Post by: jdmking18 on Sep 4, 2011
yeah, it also if depend if the nerve is sensitive to the lidocaine, or not.