Re: Non-Specialized cell

["Susan McElrath" <smhp@BELLSOUTH.NET>]

Actually Schwann cells are located outside the brain and spinal cord.

Oligodendrocytes are the myelin-producers in the brain and spinal cord,

the central nervous system.  



I think it is safe to say the brain cells are very specialized, or

"differentiated" compared to, say, the epithelial cells that line the GI

tract.  They do not divide rapidly, which is probably why they are more

radiation-resistant than cells that divide frequently.



Susan McElrath

smhp@bellsouth.net

(770) 222-0829 home

(770) 222-4958 office

(770) 633-8591 mobile

(678) 623-3310 fax

======================================

Date: Wed, 11 Aug 2004 07:04:12 -0700 (PDT)

From: John Jacobus <crispy_bird@YAHOO.COM>

Subject: Re: Non-Specialized cell



First of all, the brain is not "a non-specialized

cell."  It is an organ of highly differentiated cells

that work in consort to perform many individual

functions.  See http://www.albany.net/~tjc/20-03.html

and http://www.albany.net/~tjc/20-03.html



Besides neurons and swann cells, 90% of the brain is

made of glial cells. 

http://www.enchantedlearning.com/subjects/anatomy/brain/Neuron.shtml



I think the question should be "Is the brain CELL

considered to be a non-specialized cell?"  That is the

way the question is usually stated, and the answer is

"no."



- --- "Moore,Paul" <MoorePE@PGDP.USEC.COM> wrote:



> I am looking for the answer to this question "Is the

> brain considered to be

> a non-specialized cell?"

> I have read the section in Gollnick and cannot

> interpret what is being

> stated.

> I am receiving different answer from people where I

> work, so I thought I

> would ask Radsafe for the answer.

> Thanks very much for your time.

> 

> Paul Moore

> HP Technical Trainer

> Phone 270-442-5956 / MS 2121

> FAX 270-441-6139

> <mailto:moorepe@pgdp.usec.com>