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Gated channel

Gated channel

channel through a membrane that can be opened or closed by chemical or electrical events.

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Neurobiology Questions

... 3. In the resting, unstimulated neuron, activation gates of most sodium channel are____ inactivation gates of most sodium channels are_____ and activation gates of most voltage-gated potassium channels are ______. A. closed; open; closed B. closed; open; open C. ...

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by biol245
Fri Sep 24, 2010 2:29 pm
Forum: Cell Biology
Topic: Neurobiology Questions
Replies: 0
Views: 4396

Re: The Physics of how the Myelin Sheath actually works.

... faster where the wrapping is. Ahh, so there are still a ton of voltage gated Na+ gates down the myelinated portion of the channel, it's just that these function a lot faster? That makes a lot more sense now, thanks! ...

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by Nebulae
Tue Feb 26, 2008 8:18 am
Forum: Human Biology
Topic: The Physics of how the Myelin Sheath actually works.
Replies: 17
Views: 23549

how do proton pumps help regulate the size of stomata?

... a hyperpolarisation of the plasma membrane, which opens a voltage-gated potassium channel, making potassium enter the cell. Then, as it can be seen from Dave's animation, water ...

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by MrMistery
Thu Jan 10, 2008 1:49 pm
Forum: Cell Biology
Topic: how do proton pumps help regulate the size of stomata?
Replies: 2
Views: 5612

Na/K ATP-ase Reversal

... whereas more K+ can be found inside the cell. Both Na+ and K+ have channel, which is voltage-gated. When there is an adequate stimulus, Na+ channel will open and the ion will start to ...

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by Dr.Stein
Wed Feb 21, 2007 7:26 am
Forum: Cell Biology
Topic: Na/K ATP-ase Reversal
Replies: 5
Views: 5455

Nerve Impulses

... your body are compressed. These nerves respond to compression. Voltage gated ion channels, located on the axon, open up. Sodium ions (positively charged) rush in through the ...

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by Khaiy
Fri Apr 21, 2006 6:44 pm
Forum: General Discussion
Topic: Nerve Impulses
Replies: 2
Views: 2818
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