Intracellular sodium concentration of the motor neuron, Biology

Assignment Help:

Intracellular sodium concentration of the motor neuron

A complete motor neuron is removed from a frog and placed in normal physiological saline at 1 AM.  The neuron is healthy.  At 2 AM, the physiological saline bathing the neuron is removed and replaced with a modified physiological saline.  The composition of the modified physiological saline is as follows: its potassium concentration is the same as normal physiological saline; its sodium concentration is the same as the intracellular sodium concentration of the motor neuron; its total concentration of solutes (osmolarity) is the same as normal physiological saline.  For this question, ignore any possible effects due to the sodium-potassium pump.  At 2:05 AM, the resting membrane voltage of the neuron is -70 millivolts.  At 2:06 AM,

A. the value of the Nernst equilibrium potential for sodium ions for the neuron is greater than -20 millivolts.

B. an increase in sodium conductance will lead to a decrease in the amount of intracellular sodium.

C. an increase in sodium conductance will lead to no change in the membrane voltage.

 


Related Discussions:- Intracellular sodium concentration of the motor neuron

Research to improve health care delivery, Research to Improve Health Care D...

Research to Improve Health Care Delivery: Today, much  of health  care  delivery  system remains  imitative  and intuitive rather than innovative,  creative or  scientific in

How many grams of sodium dodecyl sulfate, How many grams of sodium dodecyl ...

How many grams of sodium dodecyl sulfate (mw = 288.37) would you dissolve in 80 mLs of water to make a 20% solution of SDS?

Pulse oximetry readings, Outline three client considerations when taking an...

Outline three client considerations when taking an accurate pulse oximetry reading.

What is peripheral vein feeding, What is Peripheral Vein Feeding Intrav...

What is Peripheral Vein Feeding Intravenous feeding is a method of  providing parenteral nutrition when a  patient cannot take in food or formula through the gastrointestinal

What are the parathyroids, What are the parathyroids? Where are they locate...

What are the parathyroids? Where are they located and what are the hormones secreted by these glands? The parathyroids are four small glands embedded two in every posterior fac

Define laser tweezers technology - pure culture techniques, Define Laser Tw...

Define Laser Tweezers Technology? In addition to above said classical methods, advance technologies can be used for obtaining pure cultures. Laser tweezers technology is useful

Symptoms of malabsorption syndrome, Q. Symptoms of malabsorption syndrome? ...

Q. Symptoms of malabsorption syndrome? The most common symptoms are weakness, lassitude and marked weight loss. Steatorrhoea (excess fat in stools), anaemia and chronic ill h

The dna revolution, Unprecedental clarity has come to our understanding of ...

Unprecedental clarity has come to our understanding of genetic differences by the analysis of DNA sequences. It is not surprising in which the latest DNA technologies are leading t

Explain the aseptic technique - sub culturing, Explain the Aseptic Techniqu...

Explain the Aseptic Technique - Sub Culturing? Aseptic technique is a series of procedures used to prevent contamination of cultures and sterile culture media. It is one of the

Classification of freshwater ecosystems, Classification of Freshwater Ecosy...

Classification of Freshwater Ecosystems Fresh water ecosystems depend on the terrestrial ecosystems for large quantities of organic and inorganic matter which are constantly a

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