An action potential is an electrical impulse used for information passage between the nerve cell and muscle cell. A slight change in the potential of the resting membrane generated by a stimulus that opens a sodium gate in the nerve cell is called as the local potential. It occurs only when there is a high density of ion channels. Approximately, 50 to 75 channels/ µm 2 are seen in the soma, which is not enough to generate an action potential. The trigger zone has 350 to 500 channels/ µm 2 . If a local potential in the excitatory state spreads to the trigger zone and if it is strong enough till its arrival, channels can be opened and action potential can be generated. The local potential is produced by voltage-gated ion channels on the dendrite and soma, may be positive (depolarized) or negative (hyperpolarized).

Question

Want to see the full answer?

Answer 1

Question

Chapter 12.4, Problem 16BYGO

Summary Introduction

Introduction:

An action potential is an electrical impulse used for information passage between the nerve cell and muscle cell. A slight change in the potential of the resting membrane generated by a stimulus that opens a sodium gate in the nerve cell is called as the local potential. It occurs only when there is a high density of ion channels. Approximately, 50 to 75 channels/ µm²are seen in the soma, which is not enough to generate an action potential. The trigger zone has 350 to 500 channels/ µm². If a local potential in the excitatory state spreads to the trigger zone and if it is strong enough till its arrival, channels can be opened and action potential can be generated. The local potential is produced by voltage-gated ion channels on the dendrite and soma, may be positive (depolarized) or negative (hyperpolarized).

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

Explain each punnet square results (genotypes and probabilities)

Give the terminal regression line equation and R or R2 value: Give the x axis (name and units, if any) of the terminal line: Give the y axis (name and units, if any) of the terminal line: Give the first residual regression line equation and R or R2 value: Give the x axis (name and units, if any) of the first residual line : Give the y axis (name and units, if any) of the first residual line: Give the second residual regression line equation and R or R2 value: Give the x axis (name and units, if any) of the second residual line: Give the y axis (name and units, if any) of the second residual line: a) B1 Solution b) B2 c)hybrid rate constant (λ1) d)hybrid rate constant (λ2) e) ka f) t1/2,absorb g) t1/2, dist h) t1/2, elim i)apparent central compartment volume (V1,app) j) total AUC (short cut method) k) apparent volume of distribution based on AUC (VAUC,app) l)apparent clearance (CLapp) m) absolute bioavailability of oral route (need AUCiv…

You inject morpholino oligonucleotides that inhibit the translation of follistatin, chordin, and noggin (FCN) at the 1 cell stage of a frog embryo. What is the effect on neurulation in the resulting embryo? Propose an experiment that would rescue an embryo injected with FCN morpholinos.