How does the depolarization of the neuronal membrane start, Biology

Assignment Help:

Q. How does the depolarization of the neuronal membrane start?

The primary cause of the neuronal depolarization is the binding of neurotransmitters released in the synapse by the axon of the neuron that sent the signal to specific receptors in the membrane of the neuron that is receiving the stimulus. The binding of neurotransmitters to those receptors is a reversible phenomenon that alters the membrane permeability of the region since the binding cause sodium channels to open when positive sodium ions enter the cell in favor of their concentration gradient, the membrane voltage increases thus lessening the negative polarization. If this depolarization reaches the excitation threshold (about -50 mV) the depolarization continues the action possible is reached and the impulse is transmitted along the cell membrane.


Related Discussions:- How does the depolarization of the neuronal membrane start

How the visual images are projected, Since the visual images are projected ...

Since the visual images are projected in an inverted manner on the retina why don't we see things upside down? As the crystalline lens is a convex spherical lens it forms inver

Hygroscopic coeflicient-retention of soil moisture, Hygroscopic Coeflicient...

Hygroscopic Coeflicient To have a more complete picture of soil moisture relations, let us take a soil sample and oven dry it for 24 hours at 11 o C. Now if this soil is kept i

Define some example of acidic and basic buffer, Define Some Example of Acid...

Define Some Example of Acidic and Basic Buffer? Frequently used example of acidic and basic buffer includes: - Acidic buffer: a mixture of CH 3 COOH (acetic acid) + CH 3 C

What are the problems regarding terrestrial environment, Q. What are the pr...

Q. What are the problems that vertebrates needed to solve to adapt to the terrestrial environment since they came from the aquatic habitat? How evolution does solve those problems?

Swine influenza, Swine influenza Swine influenza, a highly contagious ...

Swine influenza Swine influenza, a highly contagious disease affecting the respiratory tract of pigs, is c a use d  b y a  vir us b e lo nging t o the ge nus I nflu e nz a vir

Excretory system, extensive note on the excretory system of amphibian

extensive note on the excretory system of amphibian

Determine the characteristics of soil profile, Characteristics of Soil Prof...

Characteristics of Soil Profile  The profile characteristics studied in the field consist of locating the soil hor izons (based on its colour description that includes the  col

Structure and content of neuropsychological battery, Structure and Content ...

Structure and Content of NEUROPSYCHOLOGICAL BATTERY The battery contains 269 items, each of which may be scored on a 2- or 3- point scale. A score of 0 indicates normal perform

Taxonomy, what arachnid is beneficial

what arachnid is beneficial

Vertebrate heart, VERTEBR A T E HEART Heart = Cardia. Most import...

VERTEBR A T E HEART Heart = Cardia. Most important organ of body. Main function is to pump the blood. Study of heart is cardiology. In heart auricles and ventricles pr

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