Other Free Encyclopedias » Medicine Encyclopedia » Aging Healthy - Part 3

Neurochemistry - Neurochemistry Of Synaptic Transmission, Effects Of Age On The Neurochemistry Of Synapses, Functional Consequences Of Age-related Neurochemical Changes

neuron electrical neurons cell

None of the billions of nerve cells, or neurons, in the human brain functions alone. To process information, neurons must form circuits and must communicate with each other rapidly and with great precision. Within a neuron, the electrical impulses that carry information are propagated by rapid changes in membrane potential that arise from the controlled opening and closing of ion channels. These pores in the cell membrane permit the controlled passage of positive or negative ions between the interior and exterior of the cell, and thereby the conduction of electrical impulses along the cell's processes. Additional mechanisms are required at synapses (neuron junctions) to pass signals from one neuron to another. Although a few neurons form electrical synapses, where electrical signals are conducted directly from one neuron to the other through specialized ion channels (gap junctions), most neurons in the mature nervous system communicate via chemical synapses. At chemical synapses, electrical activity in a presynaptic neuron causes the release of a chemical messenger, a neurotransmitter, which diffuses across the narrow synaptic cleft to bind to neurotransmitter receptors on the postsynaptic neuron and elicit changes in the electrical activity of that neuron.

Neurodegenerative Diseases [next] [back] Neurobiology

User Comments

The following comments are not guaranteed to be that of a trained medical professional. Please consult your physician for advice.

Your email address will be altered so spam harvesting bots can't read it easily.
Hide my email completely instead?

Cancel or

Vote down Vote up

8 months ago

Online Cake Delivery for Every Occasion
http://www.cakengift.in/by-city/cake-delivery-in-dehradun/saket.html
http://www.cakengift.in/by-city/cake-delivery-in-dehradun/doon-it-park.html
http://www.cakengift.in/by-city/cake-delivery-in-dehradun/sahastradhara-road.html

Vote down Vote up

8 months ago

Corporate Party Cake Ideas from Online Cake
http://www.cakengift.in/by-city/cake-delivery-in-dehradun/kaulagarh.html
http://www.cakengift.in/by-city/cake-delivery-in-dehradun/panditwari.html
http://www.cakengift.in/by-city/cake-delivery-in-dehradun/canal-road.html
http://www.cakengift.in/by-city/cake-delivery-in-dehradun/rajpur-road.html

Vote down Vote up

8 months ago

We have a wide range of cakes Pls visit at
http://www.cakengift.in/
http://www.cakengift.in/by-city/cake-delivery-in-dehradun.html
http://www.cakengift.in/by-city/cake-delivery-in-dehradun/jakhan.html
http://www.cakengift.in/by-city/cake-delivery-in-dehradun/bidholi.html

Vote down Vote up

over 1 year ago

Thanks for more information about visit this link:
http://www.adword.co.in/packers-and-movers-hyderabad/
http://www.adword.co.in/packers-and-movers-mumbai/
http://www.adword.co.in/packers-and-movers-pune/

Vote down Vote up

over 1 year ago

Thanks for more information about visit this link:
http://www.adword.co.in/packers-and-movers-bangalore/
http://www.adword.co.in/packers-and-movers-delhi/
http://www.adword.co.in/packers-and-movers-gurgaon/
http://www.adword.co.in/

Vote down Vote up

over 1 year ago

Thanks for mour information visit:
http://top3th.co.in/packers-and-movers-gurgaon/
http://top3th.co.in/packers-and-movers-delhi/
http://top3th.co.in/packers-and-movers-navi-mumbai/
http://top3th.co.in/packers-and-movers-thane/
http://top3th.co.in/

Vote down Vote up

over 1 year ago

Thanks More for information Visit:
http://www.export5th.in/packers-and-movers-in-gurgaon/
http://www.export5th.in/packers-and-movers-in-delhi/
http://www.export5th.in/packers-and-movers-in-noida/
http://www.export5th.in/packers-and-movers-in-chennai/
http://www.export5th.in/packers-and-movers-in-dwarka/
http://www.export5th.in/packers-and-movers-in-ghaziabad/
http://www.export5th.in/packers-and-movers-in-faridabad/

Vote down Vote up

over 1 year ago

Thanks for More information Top 3th moving services Visit:
http://3th.co.in/packers-and-movers-delhi/
http://3th.co.in/packers-and-movers-ghaziabad/
http://3th.co.in/packers-and-movers-faridabad/
http://3th.co.in/packers-and-movers-noida/

Vote down Vote up

over 1 year ago

Thanks for More information Export5th in packing services Visit link:
http://www.export5th.in/packers-and-movers-in-hyderabad/
http://www.export5th.in/packers-and-movers-in-mumbai/
http://www.export5th.in/packers-and-movers-in-pune/
http://www.export5th.in/packers-and-movers-in-bangalore/