IUBio

Axon collaterals ?

Lance Sherman lancesherman at insightBB.com
Thu Dec 18 11:45:32 EST 2003


thanks again for your contribution, r

your informed contributions to this newsgroup make the daily distillation
worthwhile


"r norman" <rsn_ at _comcast.net> wrote in message
news:erk3uvs9tqjkgkg2fklq2o4fls4u05ne2s at 4ax.com...
> On Thu, 18 Dec 2003 12:49:39 GMT, "Glen M. Sizemore"
> <gmsizemore2 at yahoo.com> wrote:
>
> >The monoamines have both too, right?
>
> Yes.  Even glutamate has both in the retina.  I misspoke
> about "all" the known glutamate receptors.  Glutamate is
> "ordinarily" excitatory in the CNS.
>
> Your point is absolutely correct, though.  Whether a synapse is
> excitatory or inhibitory depends on the postsynptic channel involved,
> not the transmitter.
>
> >
> >"r norman" <rsn_ at _comcast.net> wrote in message
> >news:nn83uvkg4c106c5uo04kjv4a6511la6qsr at 4ax.com...
> >> On Thu, 18 Dec 2003 10:53:09 GMT, "Glen M. Sizemore"
> >> <gmsizemore2 at yahoo.com> wrote:
> >>
> >> >Isn't "excitatory" vs. "inhibitory" a function of the post-synaptic
> >> >receptor?
> >>
> >> It certainly is for cholinergic synapses.  But somehow all the known
> >> glutamate receptors are excitatory and the GABA receptors inhibitory.
> >>
> >>
> >
>





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