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cell membrane
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Which type of membrane channels are found at the axon?
Voltage-gated Na+ and voltage-gated K+ channels
How does graded potential occur?
Graded potential occurs when triggered by a stimulus and gated ion channels open these gated channels can either be chemically gated or mechanically gated. In order to have graded potential threshold must be met in order to generate action potential. Good day!
In a neuron where are voltage-gated calcium channels located?
Found in the terminal
Type of membrane channel that opens when distorted?
Mechanically-gated
What is a gated channel?
It is a channel through a membrane that can be opened or closed by chemical or electrical events.
Which type of membrane channels are found at the axon?
Voltage-gated Na+ and voltage-gated K+ channels
A receptor that contains many mechanically gated ion channels would function best as?
tactile receptor
How does graded potential occur?
Graded potential occurs when triggered by a stimulus and gated ion channels open these gated channels can either be chemically gated or mechanically gated. In order to have graded potential threshold must be met in order to generate action potential. Good day!
In a neuron where are voltage-gated calcium channels located?
Found in the terminal
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.
Why does injection of a local anesthetic into a finger still cause a loss of the sensation of touch from the finger?
Touch stimulation of this sensory receptor will open the mechanically gated ion channels, but action potentials are still not initiated because propagation of an action potential requires the opening of voltage-gated Na+ channels
What are channels of production?
Voltage Gated channels
What region of a neuron would have significant numbers of voltage-gated ion channels?
These are found along the axon and at the synapse. Voltage-gated ion channels directionally propagate electrical signals in one direction.
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.
Type of membrane channel that opens when distorted?
Mechanically-gated
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
