Question

For each of the following changes to the Action Potential propose one possible mechanism (and explain why):

Repetitive firing

Increased threshold

Increased refractory time

Increased AP amplitude

Answer 1

ANSWER:

The electrical potential associated passage of impulse along membrane of muscle cell (or) never cell there action potential neutron sends information down an axon cell body.there neuroscientists use a words spike (or) impulse.

Solution het The changes of action Potential one possible mechanism - A action potential of defined as fast transitory and propogate & resting membrane potential The neurons of muscle cells are capable to generate action potential, it is also called Excitability. * There are using several phases: - 1. Hypopolarization 2. Depolarization 3. oveo shoot 4. Repolarisation. . The action potential play of cell-to-cell Communication role. by use with regard à Saltatory conduction & theore propogation signals along Neutron's axon toward boutons situated Ends of axon. these signals are Connect with other Neusons at synapses.

* Repetitive firing :- It is defined as a occurrence of train Network action potential Response content Current Stimulus. The capable of firing repetively very low rates and not shared general by axon. • There bia-physical Repetative action and potential firing terms of positive & Negitive feedback Process activity. The channel action and inaction was in with in cell * incoreased threshold - The threshold Potential & membrane value blu - 50 and ~ 55 mv it is based on several factors The Neuron's resting membrane Potential (-7omy) Can altered increase and decrease likelihood of reached of sodium a potassium ions. o the action potential electrical activity Created depolarization current. aesting potential omu when depolaisation reaches -55 mv and Neutron fiore action Potential this is called thereshold

Increased Refractory time i Increased infusion of oxtocin duvring a Excution of beleived dusponsible the male of refractory amount Period of increased to length Each of Gut 0.7 minutes ģ a Excutaion the some downtime of order to rest and recover. at is using a several drugs of shoaten refractory period of potentially letting orgasm. Increased Ap amplitude of the action potential (Ap) Amplitude velocity of Propogation is incore ases with increaseing cell * diameter • Similarly increases Extracellular Potassium ion concentration from Normal to Cu.smm (4.5mM) to amm results there resulte ga Diastolic Potential in both trans membrane g Map record ing recordings '? There amplitude to incoreaused to diastolic intervals of '2 seconds increase a Prolongation and Glicited after 10 seconds.