Biological role of ions

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University Pod Year 1 Flashcards on Biological role of ions, created by Morgan Morgan on 31/12/2013.
Morgan Morgan
Flashcards by Morgan Morgan, updated more than 1 year ago
Morgan Morgan
Created by Morgan Morgan almost 11 years ago
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Question Answer
Sodium-potassium pump pumps? Sodium out and potassium in to the cell.
A membrane is more permeable to ....... than to ........ potassium,sodium
The inside of a cell is more The outside of a cell is more negative positive
Voltage inside the cell is -70mV
This value is known as the? Resting membrane voltage
Excitable cells are? Muscle and nerve cells
The special set of ion channels is called Gated Ion channels
These channels can either be in an..... or......state. open or closed
At rest the membrane is Polarised.
When an excitable cell is activated, the following sequence of events happens? Polarised (inside negative) Depolarised (inside positive) Repolarised (inside negative)
The change in membrane voltage in excitable cells is called? ACTION POTENTIAL
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