ion channels

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8 Terms

1
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ion channel

integral membrane proteins that allow specific ions to flow across the cell membrane

2
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leak (passive) channel

always open

3
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resting membrane potential (RMP)

maintenance of separation of electrical charge across the membrane while the cell is at rest

4
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gated channels

allow for control of ion flow across the membrane

5
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3 types of gated or regulated channels

chemically, voltage, mechanically

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chemically gated channels

open and close in response to the specific chemicals (think of locked door as channel and key is the drug)

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voltage gated channel

open and close at specific voltages (card for hotel rooms)

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mechanically gated channel

open in response to physical pressure of the cell (air nozzle of a floaties)