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

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.

 

Posted Date: 7/16/2013 8:44:22 AM | Location : United States







Related Discussions:- How do the sodium and potassium ions maintain the neuron, Assignment Help, Ask Question on How do the sodium and potassium ions maintain the neuron, Get Answer, Expert's Help, How do the sodium and potassium ions maintain the neuron Discussions

Write discussion on How do the sodium and potassium ions maintain the neuron
Your posts are moderated
Related Questions
Because RNA is composed  of four parts of nucleotides,  there are 43 =  64 possible codons,  which  is  64  possible  triplets  of  nucleotides   with  several  sequences. Furtherm

What is the Importance of Vitamin K The site of action of vitamin K activity is the highly complex mechanism of blood coagulation. Due to its effect on prothrombin, vitamin K i

Genetic Defects in DNA repair and human disease: 1. Xeroderma pigmentosum is an inherited disease that is characterized by severe photosensitivity and a very high incidence of

about of moving blood

Nose Nose consists of external and internal parts. The inner lining of the nose contains millions of small receptors. These receptors are located on the sensory hairs.

Determine the Food Sources of Manganese? The food sources of manganese along with their content are tabulated in Table. Here, you can see that whole cereals, nuts, leafy vegeta

Consistently overwatering a potted tomato plant will eventually kill it. Using the map, suggest why waterlogged soil results in plant death. O2 cannot reach respiring root cells. T

Nature of Metabolites in Sieve Tubes The phloem sap contains three major classes of organic compounds - organic acids, amino acids and sucrose besides some cations, anions and

Explain the Management Strategies for Adults with Congenital Heart Disease ? The goals for management of congenital heal disease in adults are improving upon the natural histo

Q. What is the formula of the DPD for withered (shrunken) plant cells and how is that situation possible? Withered plant cells are those that have shrunk due to loss of water b