PHSI191

Card Set Information

Author:
lastone4321
ID:
150401
Filename:
PHSI191
Updated:
2012-04-26 21:35:38
Tags:
PCC
Folders:

Description:
PCC-bioelectricity
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  1. Electricity-dependent body processes=
    1.All neural and nerve controlled processes

    • 2.Movement of blood around the body.
    • 3.
    • 4.
    • 5.
  2. ion channels =
  3. resisters in the body
  4. ion movements-
    sodium has a positive electrice pathway but will not move because the membrane is not permeable which means we have a high resistance
  5. anaesthetics works by
    agents that block electrical or chemical signaling by nerves (generally by increasing resistance to flow of specific ions) will interfere with transmission of information in the nervous system.

    -A drug prevents the flow of ions through a specific channel
  6. Neurotoxins=
    naturally-occuring substance that interfere with electrical signaling in nerves and muscles.


    • -incease resistance to flow of ions across the cell membrane
    • e.g. tetrodotoxin-puffer fish poison

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