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Axon hillock- a pyramidal shaped region where all axons originate from
Initial segment- an area just beyond the axon hillock where all the stimulatory and inhibitory signals coming into the neuron are algebraically summed and it is decided whether or not an action potential should propagate or not.
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The above describes the structure of the axon where the action potential is created.
However, the actual nerve impulse (action potential) is generated in a series of steps based on how the ion channels trigger.
In this respect the first segment of the nerve impulse is the stimulus, which has to trigger positive ion influx beyond a given threshold.
After that stimulus exceeds the threshold, it triggers the opening of ion channels which pump sodium ions into the axon and potassium ions out, thus increasing the net positive charge on the inside of the neuron, depolarizing it and initiating the action potential (the nerve impulse).
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Where does a nerve impulse start?
A nerve impulse starts at the dendrite
The duration of a nerve impulse is approximately?
A nerve impulse is approximately 1 millisecond.
What is the relay station for nerve impulses?
There is no relay station in nerve impulse conduction.
A nerve impulse starts at the dendrite then travels to the?
axon
Write note on nerve impulse?
Using your textbook, you need to make notes on "Nerve Impulses".
What is quicker a nerve impulse or a hormone?
nerve impulse
Where does a nerve impulse start?
A nerve impulse starts at the dendrite
Which travels quicker through the body a nerve impulse or a hormons?
a nerve impulse
The neurotransmitters of a neutron enable a nerve impulse to do what?
they transport the nerve impulse through the synapses (:
Is ventricular systole responsible for nerve impulse?
no ventricular diastole is responsible for nerve impulse
The duration of a nerve impulse is approximately?
A nerve impulse is approximately 1 millisecond.
How does a nerve impulse follow all or nothing principle?
How does a nerve impulse follow the all-or-nothing principle???
What pathway does a nerve impulse follow after initiated into a receptor?
nerve my a$$ nerve
Is an action potential necessary for a nerve impulse to occur?
Yes, an action potential is needed for a nerve impulse to occur.
Is a action potential necessary for a nerve impulse to occur?
Yes, an action potential is needed for a nerve impulse to occur.
What is a nerve impule transmitted by axons?
It is called a nerve impulse.
What nerve receive the impulse?
receptors.
