How do the sodium and potassium ions maintain the neuron, Biology

Assignment Help:

How do the sodium and potassium ions maintain the resting potential of the neuron?

The plasma membrane of the neuron when at rest maintains an electric potential difference among its external and internal surfaces. This voltage is known as resting potential. The resting potential about -70 mV indicates that the interior is more negative than the exterior (negative polarization). This condition is maintained by transport of potassium and sodium ions across the plasma membrane.

The membrane is permeable to potassium ions but not to sodium ions. At rest the positive potassium ions exit the cell in favor of the concentration gradient as within the cell the potassium concentration is higher than in the extracellular space. The positive sodium ions cannot however go into the cell. As positive potassium ions exit the cell with not sufficient compensation of positive ions entering the cell, the intracellular space becomes more negative and the cell stays polarized.

 


Related Discussions:- How do the sodium and potassium ions maintain the neuron

Why are additives used in foods?, Normal 0 false false fal...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

What is the main risk factor for lung cancer, Q. What is the main risk fact...

Q. What is the main risk factor for lung cancer? The major risk factor for lung cancer is tobacco smoking. In The large number of cases of this kind of cancer is due to the inc

Define about traumatic needles, Define about Traumatic needles Traumat...

Define about Traumatic needles Traumatic needles are needles with holes or eyes which are supplied to the hospital separate from their suture thread. The suture must be thread

Stentless devices -biological valves, Stentless Devices : A bioprosthesis...

Stentless Devices : A bioprosthesis mounted on a stent reduces the effective orifice area (EOA). The newer version (third generation) stentless gluteraldehyde preserved porcine v

What electrocardiogram results show a shortened qt interval, Electrocardiog...

Electrocardiogram results show a shortened QT interval and an increase in the P-R interval (i.e., decreased duration of action potential and decreased conduction velocity). Laborat

Sticky sweet method-endodontics principles, Sticky sweet method Richwi...

Sticky sweet method Richwil crown and bridge remover -It is a resin block of water-soluble , like a stick sweet -It is first softened in hot water -Placed on the restorat

Signify the term - opercular gill, Signify the term - opercular gill. T...

Signify the term - opercular gill. The gill found in bony fish. Operculum is the outer covering of the gill. When it's drawn away from the body, it pulls water inside the bucca

How does hcl also directly participate in digestion, Besides being fundamen...

Besides being fundamental for the activation of the main gastric digestive enzyme how does HCl also directly participate in digestion? With its corrosive effect, HCl also helps

Explain procedure for capsule staining in a culture, Explain Procedure for ...

Explain Procedure for Capsule Staining in a Culture? We have learnt that Capsule staining can be undertaken either by negative staining or Anthony method. Now carry out the exe

Introduction to ecology, Ecology is a interdisciplinary branch of science t...

Ecology is a interdisciplinary branch of science that deals with inter relationship between living organism and their environment. The term ecology (from greek, oikos-meaning ho

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd