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13 Sep 2007, 11:13 PM
| #1 (permalink) |
| Executive Member  HSC: 2007 Gender: Male
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21 Feb 2009, 8:21 PM  | someone fill me in You can hide this advertisement by registering. Identify neurones as nerve cells taht are transmitters of signals by electrochemical changes in their membranes...waht do i need to know for this dot point, like to what detail? can someone explain the actiona potential, threshold, the whole idea of sodium and potassium ions..blah blha blah..
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14 Sep 2007, 9:55 PM
| #2 (permalink) |
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Yesterday, 11:41 PM | Re: someone fill me in This thread has been moved to the "Communication" section. 
__________________ PhD, University of Cambridge, 09-12 MSc, UNSW, 08-09 BMedSc (Hons I), UNSW, 04-07 |
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4 Oct 2007, 9:20 AM
| #4 (permalink) |
| CBMI, MPH, AAP, MSF  HSC: 2007 Gender: Male Location: Manly
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24 Apr 2009, 7:36 PM  | Re: someone fill me in Basically, a threshold is a limit or a certain strength of a stimulus that is detected by the receptor cells (about -50mV) to achieve an action potential (-70mV). If it has been achieved, an action potential (electrochemical impulse) is formed, which is electrical changes caused by sodium ions moving into the neurone (depolarisation). After the signal has been transmitted, potassium ions move to the outside of the cell to restore the original charge of the neurone (repolarisation). <--- that's the basics of it, but it goes into more depth.
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