Signal (biology)
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{{main|Electrophysiology}}
In [[biology]] a '''signal''' or '''biopotential''' is an [[electric]] quantity (voltage or current or field strength), caused by [[chemical]] reactions of charged [[ions]]. Another use of the term lies in describing the transfer of information between and within cells, as in [[signal transduction]]. Biological signals can also be seen as an example of [[signal (information theory)]].
== See also ==
* [[Action potential]]
* [[Bioelectromagnetism]]
* [[Signal transduction]]
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[[Category:Electrophysiology]]
[[ar:إشارة (أحياء)]]