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When an action potential reaches the end of a neuron it triggers the release of?
Wiki User
∙ 8y ago
When an action potential reaches the end of a neuron, it triggers the release of neuotransmitters such as epinephrine (sympathetic) or achetylcholine (parasympathetic).
Wiki User
∙ 8y ago
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Is calcium a neurotransmitter?
No, calcium itself is not a neurotransmitter BUT it is highly important in the process of the action potential. The action potential triggers the influx of calcium at the end of the terminal bouton, causing the influx of Ca2+ into the cell and this triggers for the release of the neurotransmitter. :)
What triggers the action potential?
A temporary accumulation of sodium ions at the axon hillock which yields a voltage sufficient to open voltage-gated ion pores on the axon is what triggers an action potential.
What change in membrane potential triggers an action potential?
An ion channel.
When the neuron is sussiciently stimulated this process and triggers the action potential?
depolarization
When the neuron is sufficiently stimulated this process occurs and triggers the action potential?
depolarization
Is calcium a neurotransmitter?
No, calcium itself is not a neurotransmitter BUT it is highly important in the process of the action potential. The action potential triggers the influx of calcium at the end of the terminal bouton, causing the influx of Ca2+ into the cell and this triggers for the release of the neurotransmitter. :)
What change in membrane potential triggers action potential?
depolarization
What change in membrane potential depolarization or hyperpolarization triggers an action potential?
despolarization
What event most directly triggers the release of calcium from the terminal cisternae?
action potential propagating down the T tubule
What triggers the action potential?
A temporary accumulation of sodium ions at the axon hillock which yields a voltage sufficient to open voltage-gated ion pores on the axon is what triggers an action potential.
What change in membrane potential triggers an action potential?
An ion channel.
When the neuron is sussiciently stimulated this process and triggers the action potential?
depolarization
When the neuron is sufficiently stimulated this process occurs and triggers the action potential?
depolarization
A neuron fires only when its membrane reaches what?
When it reaches the nerve impulse threshold, the next neuron will fire..
When a neuron reaches its threshold?
When a neuron reaches its threshold, it initiates an action potential. This is a brief electrical impulse that allows for communication between neurons. The action potential travels down the axon of the neuron to transmit signals to other neurons or cells.
Why are neurotransmitters sometimes referred to as a key?
When an action potential reaches the knoblike terminals at an axon's end, it triggers the release of chemical messengers called neurotransmitters. Within 1/10,000th of a second, the neurotransmitter molecules cross the synaptic gap and bind to receptor sites on the receiving neuron-as precisely as a key fits a lock.
Disturbances when will sensory neurons result in an action potential?
if the graded potential of threshold size reaches a trigger zone
