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If I understand your question correctly, the answer is that neurotransmitters are NOT INVOLVED AT ALL in the movement of an action potential from the axon hillock to the axon terminal(s). Neurotransmitters are active in the SYNAPSES between neurons, not ALONG an axon. They are released by an axon terminal, then pass across the synaptic cleft to, for instance, a dendrite or dendritic spine of another neuron, where they fit into a receptor site of an ion pore, causing that ligand gated ion pore to open, allowing an influx of ions which begin the propagation of the chemical-voltage impulse that is a nerve signal.
What else can I help you with?
What part of neuron releases neurotransmitter my choices are axon axon terminal dendrite myelin sheath or cell body?
The neurotransmitter is released from the axon terminal.
Is and axon bulb and an axon hillock the same thing?
axon hillock = where cell body meets the axon axon bulb = end of the axon...lies very close to the dendrites of another neuron so impulses can pass over the synapse. AP Biology student *
Where does the action potential occur on a neuron?
The action potential occurs at the axon hillock, which is the initial segment of the axon where the cell body transitions into the axon. This is where the threshold potential is reached and an all-or-nothing electrical signal is generated and propagated down the axon.
What is the process of a neurotransmitter being absorbed into the axon terminal?
When an action potential reaches the axon terminal, it triggers the opening of voltage-gated calcium channels. Calcium ions enter the axon terminal, leading to the fusion of neurotransmitter-containing vesicles with the synaptic membrane. The neurotransmitter is then released into the synaptic cleft where it can bind to receptors on the postsynaptic neuron.
The axon is connected to the soma by the?
axon hillock
What is a axon hillock?
An axon hillock is a special cell body that connects an axon to a neuron. It is the last place where propagated membrane potentials are transmitted to the axon.
What is the sequence of events along an axon?
The sequence of events along an axon involves the generation of an action potential at the axon hillock, propagation of the action potential down the axon via depolarization and repolarization of the membrane, and neurotransmitter release at the axon terminals to communicate with other neurons or target cells.
How is the structure of neuron relate to its function?
The function of a neuron is to convey or process signals.The structure of a neuron allows these functions to occur.The relevant components of a neuron comprising its structure are:dendrites (inputs), soma(cell body), axon hillock (signal strength assessing trigger point), axon (output), axon terminal branches, and axon terminal buttons.Neurons receive signals, either from other neurons, or from receptor cells; they either simply convey the signal along the axon, or evaluate its strength and send it along the axon if the input is strong enough.The structure of the neuron allows this function to happen in the following way: the dendrites receive chemical messengers through a synapse from an axon terminal button, which opens pores in the dendrite which allow sodium ions in, creating an electric voltage; this voltage propagates down the dendrite and over the somato the axon hillock, where, if it is greater than a triggering value, it can cause the axon to fire an action potential along its length; when the action potential reaches an axon terminal button, it causes calcium ion pores to open in the button, which causes small bags of neurotransmitter chemicals to merge with the membrane of the terminal button, releasing the neurotransmitter chemicals into the synaptic cleft (gap), where they diffuse over to a dendrite.
How is the structure of a neuron related to its functions?
The function of a neuron is to convey or process signals.The structure of a neuron allows these functions to occur.The relevant components of a neuron comprising its structure are:dendrites (inputs), soma(cell body), axon hillock (signal strength assessing trigger point), axon (output), axon terminal branches, and axon terminal buttons.Neurons receive signals, either from other neurons, or from receptor cells; they either simply convey the signal along the axon, or evaluate its strength and send it along the axon if the input is strong enough.The structure of the neuron allows this function to happen in the following way: the dendrites receive chemical messengers through a synapse from an axon terminal button, which opens pores in the dendrite which allow sodium ions in, creating an electric voltage; this voltage propagates down the dendrite and over the somato the axon hillock, where, if it is greater than a triggering value, it can cause the axon to fire an action potential along its length; when the action potential reaches an axon terminal button, it causes calcium ion pores to open in the button, which causes small bags of neurotransmitter chemicals to merge with the membrane of the terminal button, releasing the neurotransmitter chemicals into the synaptic cleft (gap), where they diffuse over to a dendrite.
Which region of the cell body from which the axon originates?
The axon originates from the axon hillock, a specialized region of the cell body that connects to the initial segment of the axon. This area is important for integrating incoming signals and deciding whether to generate an action potential.
What ion enters the axon nerve terminal to cause exocytosis of the neurotransmitter is called?
The ion that enters the axon nerve terminal to trigger neurotransmitter release is calcium (Ca2+). When an action potential reaches the nerve terminal, voltage-gated calcium channels open, allowing calcium ions to flow into the cell and initiate the process of exocytosis of neurotransmitter-containing vesicles.
Where do action potentials occur?
Action potentials occur along the axon of a neuron, where the electrical signals are transmitted from the cell body to the axon terminals. The action potential is initiated at the axon hillock and propagates down the axon to trigger the release of neurotransmitters at the synapse.
