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AP 1 (11-5)
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What is membrane potential?
electrical charge difference between inside and outside of the cell membrane.
All cells, including neurons, have a _____.
membrane potential
Resting neurons have a resting membrane potential of what?
70 mV
Resting neurons are _____.
polarized
The outside charge of a cell is positive due to _____.
Na+ ions
The inside charge of a cellis negative due primarily to the presence of _____.
negatively-charged proteins
Membrane potential results from differences in the _____ of the membrane to various ions as well as by _____.
permeability
active transport mechanisms
_____ in the membrane are closed, preventing Na+ from entering the cell.
“gated” Na+ channels
Na+/K+ pump actively transports _____ Na+ out and _____ K+ in, thus causing _____Na+ to collect outside the membrane.
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Author
mc166589
ID
119312
Card Set
AP 1 (11-5)
Description
AP 1 Chapter 11.
Updated
2011-11-28T04:35:43Z
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