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

Determine the purpose of glucometer, Glucometer mainly for the following pu...

Glucometer mainly for the following purpose. (i) In acute and chronic care facilities at the patient's bedside, in clinics or hospitals. (ii) In physician's clinics. (iii

Explain common concerns during pregnancy, Explain Common Concerns during Pr...

Explain Common Concerns during Pregnancy? Many of the physiological changes that occur during pregnancy affect the digestive tract and may cause discomfort to the mother. Most

Simplification and selection of information of consciousness, Q. Simplifica...

Q. Simplification and Selection of information of Consciousness? Simplification and Selection of information: There is much "editing" that goes on in the mind-from the first cu

Pup, hey what is puperty

hey what is puperty

Botany, how can i earn money by submitting assignments?

how can i earn money by submitting assignments?

Example of positive feedback of the homeostatic regulation, Q. What is an e...

Q. What is an example of positive feedback of the homeostatic regulation? In positive feedback the effect caused by an action stimulates the action even more. This is a rarer m

Elaborate the internal vascular circulation of an eye, Elaborate the intern...

Elaborate the internal vascular circulation of an eye. Retinal vessels are derived from central retinal artery and are distributed within the inner two-third of retina. Outer o

History of protoplasm, HIS T O R Y - Protoplasm was first seen b...

HIS T O R Y - Protoplasm was first seen by Corti, 1772 F . Dujardin called it "Sarcode" & observed it in animal cell Term "Protoplasm" was given by J.E. Pu

How are grasslands classified, How are grasslands classified? Grasslan...

How are grasslands classified? Grasslands might be classified into steppes and savannahs. In the steppes the prevailing vegetation is grass, as in the pampas of South America

Enumerate about the minerals and rocks, Minerals and Rocks      A mine...

Minerals and Rocks      A mineral is an inorganic body, formed by the process of nature, usually having a definite composition. If formed under favourable conditions, it has 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