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When gated ion channels at the motor end plate open the interior of the cell becomes less negative which is known as .?
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The repolarization phase of the action potential where voltage becomes more negative after the plus 30mV peak?
K+ ions leaving the cell through voltage-gated channels
What is happening to voltage-gated channels at this point in the action potential?
Na+ channels are inactivating, and K+ channels are opening.
What is the open or close in response to binding specific molecules?
Chemically-gated channels
What voltage gated channels are present?
in the membrane that covers axons
What is primarily responsible for the brief hyperpolarization near the end of the action potential?
voltage-gated potassium channels taking some time to close in response to the negative membrane potential
The repolarization phase of the action potential where voltage becomes more negative after the plus 30mV peak?
K+ ions leaving the cell through voltage-gated channels
What is a stimulus gated channel?
There are voltage-gated ion channels and ligand-gated ion channels, and since both are stimuli the term stimulus-gated is a redundancy.
What are channels of production?
Voltage Gated channels
Which type of membrane channels are found at the axon?
Voltage-gated Na+ and voltage-gated K+ channels
What changes occur to voltage-gated Na and K channels at the peak of depolarization?
Inactivation gates of voltage-gated Na+ channels close, while activation gates of voltage-gated K+ channels open.
What is a gated channel?
It is a channel through a membrane that can be opened or closed by chemical or electrical events.
Protein channels that are sensitive to electricity are known as WHAT channels?
Voltage Gated channels
Are all the gated calcium channels concentrated at the nodes of ranvier of myelinated axons?
no, most gated mandiable channels are concentrated at the nodes of ranvier of myelinated axons.
Where are mechanically gated channels found?
cell membrane
What is happening to the voltage gated channels at this point in the action potential?
Na+ channels are inactivating, and K+ channels are opening.
What is happening to voltage-gated channels at this point in the action potential?
Na+ channels are inactivating, and K+ channels are opening.
What is it that ion channels may be always or have?
They may be always open or they may have close gated channels
