The Axon terminal ends in a synaptic knob. When the impulse reaches the axon terminal, it triggers the movement of synaptic vesicles towards the membrane where it fuses with the plasma membrane releasing its neurotransmitter in the synaptic cleft.
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What happens when a nerve impulse reaches its axon terminal quizlet?
1. When the impulse reaches the axon terminals, it causes neurotransmitters to be released into the extracellular space.
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When a nerve impulse reaches an axon terminal it causes the release of a neurotransmitter known as what?
When the nerve impulse reaches the dendrites at the end of the axon, chemical messengers called neurotransmitters are released. These chemicals diffuse across the synapse (the gap between the two neurons).
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When the nerve impulse reaches the axon terminal ions enter the terminal through voltage regulated gates?
When the nerve impulse reaches the axon terminal, 1. CALCIUM ions enter the terminal through voltage-regulated gates. The effect of the entry of these ions is to promote fusion of synaptic vesicles with the 2. SYNAPTIC CLEFT.
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What happens when a nerve impulse reaches the end of the nerve?
When a nerve impulse arrives at the end of the axon, neurotransmitters are released and travel to the dendrite of another neuron, carrying the nerve impulse from one neuron to the next.
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What happens when a nerve impulse reaches its axon terminal?
When an action potential reaches the axon terminal, the axon terminal releases molecules of a chemical called a neurotransmitter. The neurotransmitter molecules travel across the synaptic cleft and bind to receptors on the membrane of the other cell .
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When neural impulse reaches the axon terminals?
When the nerve impulse reaches the axon terminal it causes the axon terminal to release a neurotransmitter into the synapse. The synapse is the gap between the axon terminals and the next cell. A neurotransmitter is a chemical that is used to transmit an impulse to another cell.
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When a neural impulse reaches the end of an axon quizlet?
When a nerve impulse reaches the end of an axon, neurotransmitters are released into the synapse. These bind with a receptor on the next neuron, opening Na+ gates in the receiving dendrite which causes depolarization and the impulse is carried.
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What is the main event that occurs when a nerve impulse action potential reaches the axon terminal of the neuromuscular junction quizlet?
When a nerve impulse reaches a neuromuscular junction, acetylcholine (ACh) is released.
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What happens when a nerve impulse reaches its axon terminal?
When an action potential reaches the axon terminal, the axon terminal releases molecules of a chemical called a neurotransmitter. The neurotransmitter molecules travel across the synaptic cleft and bind to receptors on the membrane of the other cell .
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When neural impulse reaches the axon terminals?
When the nerve impulse reaches the axon terminal it causes the axon terminal to release a neurotransmitter into the synapse. The synapse is the gap between the axon terminals and the next cell. A neurotransmitter is a chemical that is used to transmit an impulse to another cell.
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Which voltage-gated ion channels open when an action potential arrives at the axon terminal?
When an action potential, or nerve impulse, arrives at the axon terminal, it activates voltage-gated calcium channels in the cell membrane.
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When the nerve impulse reaches the terminal the main ion that triggers the release of transmitter is?
When an action potential reaches the axon terminal it depolarizes the membrane and opens voltage-gated Na+ channels. Na+ ions enter the cell, further depolarizing the presynaptic membrane.
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What happens when an impulse reaches the terminal end?
When the impulse reaches the axon terminal, it triggers the movement of synaptic vesicles towards the membrane where it fuses with the plasma membrane releasing its neurotransmitter in the synaptic cleft.
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When a nerve impulse reaches the end of a neuron it triggers the release of?
At a chemical synapse, an action potential triggers the presynaptic neuron to release neurotransmitters. These molecules bind to receptors on the postsynaptic cell and make it more or less likely to fire an action potential.
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What occurs at the axon terminal to cause release of neurotransmitter?
An action potential travels the length of the axon and causes release of neurotransmitter into the synapse. The action potential and consequent transmitter release allow the neuron to communicate with other neurons.
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What happens when a nerve impulse reaches the axon terminal?
When an action potential reaches the axon terminal, the axon terminal releases molecules of a chemical called a neurotransmitter. The neurotransmitter molecules travel across the synaptic cleft and bind to receptors on the membrane of the other cell .
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What neurotransmitter is released at the nerve terminal?
Acetylcholine in the Peripheral Nervous System With the stimulation of the presynaptic terminal, acetylcholine is released from the vesicles and into the synaptic cleft, where the neurotransmitter is free to bind with receptors.
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When the nerve impulse reaches the end of the axon what chemical neurotransmitter is released?
Acetylcholine is an organic chemical that functions in the brain and body of many types of animals, including humans, as a neurotransmitter—a chemical message released by nerve cells to send signals to other cells [neurons, muscle cells, and gland cells].
