Dictionary » A » Axon

Axon

Axon

(Science: cell biology) a long process of a neuron, that carries efferent (outgoing) action potentials from the cell body towards target cells.

Each nerve cell has one axon, which can be over a foot long. A nerve cell communicates with another nerve cell by transmitting signals from the branches at the end of its axon. At the terminal end of the axon, the impulses are transmitted to other nerve cells or to effector organs.

in the peripheral nervous system, the larger (myelinated) axons are surrounded by a myelin sheath formed by concentric layers of plasma membrane of the schwann cell.

in the central nervous system, the function of the schwann cell is supplied by oligodendrocytes (oligodendroglia).

See: dendrite. Long nerve Fiber that conducts away from the cell body of the neuron.Part of the nerve cell that conducts electrical impulses.


Please contribute to this project, if you have more information about this term feel free to edit this page



Results from our forum


Re: ?{REGENERATION}? Is it possible ???!!

... to be a release of a threshold gradient of some factor, or possibly factors. This release should trigger the release of this hormone in the nerve axon? A type of neurotransmitter? That is released upon the threshold gradient of massive destruction. Cytokines of course would be involved as they ...

See entire post
by kolean
Fri Jun 26, 2009 12:37 pm
 
Forum: Cell Biology
Topic: ?{REGENERATION}? Is it possible ???!!
Replies: 31
Views: 1639

Require advice regarding Myelin/VitB12 :D

... around the nervous cells. However, i'm not sure what effect this has on the cell....Is it that Myelin is used as a protectorate around the nuerone/axon or is it a vital part required for normal function of the cell? I also could'ny find what greater effect this will have on the human body, but ...

See entire post
by djbellyboy
Mon Mar 09, 2009 5:43 pm
 
Forum: Cell Biology
Topic: Require advice regarding Myelin/VitB12 :D
Replies: 2
Views: 363

A question on nerves

... inhibition of the porduction of ATP would allow for more free-roaming negatively-charged phosphates to accumulate, dropping the charge within the axon (ie. less positive). Hope that helps...

See entire post
by daveinhampton
Wed Feb 18, 2009 11:59 pm
 
Forum: Cell Biology
Topic: A question on nerves
Replies: 2
Views: 436

A question on nerves

... out in the 2004 biology A-level exams: Dinitrophenol is a metabolic poison that prevents the production of ATP. What will happen when a resting axon is treated with such a poison? A) the charge inside the axon membrane becomes more negative B) the charge outside the axon membrane becomes less ...

See entire post
by anegligibleperson
Wed Feb 18, 2009 3:14 pm
 
Forum: Cell Biology
Topic: A question on nerves
Replies: 2
Views: 436

The Best Biology Definitions

... ............... someone who tells lies Aphotic ............... doesn't like to take pictures Auxin ............... large beasts of burden Axon ............... the name of a gas station Barr body ............... someone who frequents bars B cell ............... prison cell block Biogeography ...

See entire post
by aliengeek
Thu Jan 08, 2009 7:47 pm
 
Forum: General Discussion
Topic: The Best Biology Definitions
Replies: 3
Views: 599
View all matching forum results

This page was last modified 21:16, 3 October 2005. This page has been accessed 5,236 times. 
What links here | Related changes | Permanent link