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The presynaptic cell that must have action potentials to produce one or more action potentials in the postsynaptic cell is the neuron releasing neurotransmitters at the synapse. When an action potential reaches the presynaptic terminal, it triggers the release of neurotransmitters into the synaptic cleft, which then bind to receptors on the postsynaptic cell membrane, leading to the generation of an action potential in the postsynaptic cell.

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What is The process of adding the effects of many postsynaptic potentials?

The process of adding the effects of many postsynaptic potentials is called summation. There are two types of summation: temporal summation, where postsynaptic potentials from the same presynaptic neuron add up over a short period of time, and spatial summation, where postsynaptic potentials from multiple presynaptic neurons add up at the same time. Summation ultimately determines whether an action potential will be generated in the postsynaptic neuron.


Which cell must have action potentials to produce one or more action potentials in the postsynaptic cell?

A neuron (nerve cell) receives dendritic input in order to generate action potentials to transmit signals of the same. After the action potential triggers release of neurotransmitters in the axonal terminal of that neuron, those neurotransmitters propagate the signal forward to the next neuron, and so forth.


Postsynaptic potentials can be excitatory and what else?

Postsynaptic potentials can be inhibitory as well. Inhibitory postsynaptic potentials (IPSPs) hyperpolarize the postsynaptic neuron, making it less likely to generate an action potential.


What is an event when one or more presynaptic neurons fire in rapid order it produces a much greater depolarization of the postsynaptic membrane than would result from a single ESPS?

This is known as temporal summation, where multiple action potentials from presynaptic neurons arrive in quick succession at a synapse, leading to an accumulation of excitatory postsynaptic potentials (EPSPs) that can reach the threshold for generating an action potential in the postsynaptic neuron. This process enhances synaptic transmission and the strength of the signal being transmitted.


What happens when presynaptic cell's produce action potentials?

The action potential moves along the axon and releases neurotransmitters into the synapse.When the presynaptic cell (neuron) fires the action potential, it causes voltage gated sodium ion pores to open at the initial segment of its axon (just after the axon hillock), which allows sodium ions in, which cause adjacent voltage gated sodium ion pores to open, which let in more sodium ions, which do the same thing progressively along the axon, until the action potential reaches the axon terminals, at which point the voltage opens voltage gated calcium ion pores, which cause vesicles (small membrane bounded sacs) full of neurotransmitters to move toward the end of the cell membrane and fuse there, releasing their contents into the synaptic cleft.

Related Questions

What is The process of adding the effects of many postsynaptic potentials?

The process of adding the effects of many postsynaptic potentials is called summation. There are two types of summation: temporal summation, where postsynaptic potentials from the same presynaptic neuron add up over a short period of time, and spatial summation, where postsynaptic potentials from multiple presynaptic neurons add up at the same time. Summation ultimately determines whether an action potential will be generated in the postsynaptic neuron.


Which cell must have action potentials to produce one or more action potentials in the postsynaptic cell?

A neuron (nerve cell) receives dendritic input in order to generate action potentials to transmit signals of the same. After the action potential triggers release of neurotransmitters in the axonal terminal of that neuron, those neurotransmitters propagate the signal forward to the next neuron, and so forth.


When two action potentials arrive simultaneously at two different presynaptic terminals that synapse with the same postsynaptic neuron?

When two action potentials arrive simultaneously at different presynaptic terminals synapsing with the same postsynaptic neuron, the postsynaptic neuron may experience a phenomenon known as spatial summation. This occurs when the excitatory postsynaptic potentials (EPSPs) generated by each terminal combine, potentially reaching the threshold for triggering an action potential in the postsynaptic neuron. If the combined effects are sufficient, the postsynaptic neuron will fire an action potential; otherwise, it will remain at its resting potential. This process enhances the likelihood of neuronal activation in response to multiple inputs.


Postsynaptic potentials can be excitatory and what else?

Postsynaptic potentials can be inhibitory as well. Inhibitory postsynaptic potentials (IPSPs) hyperpolarize the postsynaptic neuron, making it less likely to generate an action potential.


What is an event when one or more presynaptic neurons fire in rapid order it produces a much greater depolarization of the postsynaptic membrane than would result from a single ESPS?

This is known as temporal summation, where multiple action potentials from presynaptic neurons arrive in quick succession at a synapse, leading to an accumulation of excitatory postsynaptic potentials (EPSPs) that can reach the threshold for generating an action potential in the postsynaptic neuron. This process enhances synaptic transmission and the strength of the signal being transmitted.


What is the difference between presynaptic and postsynaptic neurons?

Presynaptic neurons release the neurotransmitter in response to an action potential. Postsynaptic neurons receive the neurotransmitter (and can however become presynaptic to the next nerve cell, if the neurotransmitter has stimulated the cell enough).


Which neural circuit enables a single presynaptic stimulation to cause a postsynaptic cell to send a series of impulses?

Reverberating neural circuits are responsible for generating a series of action potentials in a postsynaptic cell in response to a single presynaptic stimulation. This circuit involves positive feedback loops where excitation from the original stimulation is amplified and sustained through recurrent connections within the network.


What happens when presynaptic cell's produce action potentials?

The action potential moves along the axon and releases neurotransmitters into the synapse.When the presynaptic cell (neuron) fires the action potential, it causes voltage gated sodium ion pores to open at the initial segment of its axon (just after the axon hillock), which allows sodium ions in, which cause adjacent voltage gated sodium ion pores to open, which let in more sodium ions, which do the same thing progressively along the axon, until the action potential reaches the axon terminals, at which point the voltage opens voltage gated calcium ion pores, which cause vesicles (small membrane bounded sacs) full of neurotransmitters to move toward the end of the cell membrane and fuse there, releasing their contents into the synaptic cleft.


When the second excitory postsynaptic potential arrives at a single synapse before the effect of the first has disappeared what occurs?

Summation occurs, where the two excitatory postsynaptic potentials combine to reach the threshold for firing an action potential. This can be either temporal summation, where two EPSPs from the same presynaptic neuron occur in quick succession, or spatial summation, where EPSPs from different presynaptic neurons arrive simultaneously.


Are neurotransmitter expelled from the presynaptic cells?

Yes, neurotransmitters are released from the presynaptic cells into the synaptic cleft where they can bind to receptors on the postsynaptic cell. This release occurs in response to an action potential traveling down the axon of the presynaptic neuron.


How does neurotransmitters initiate depolarization?

Let's picture a presynaptic neuron, a synaptic cleft, and a postsynaptic neuron. An action potential reaches the terminal of a presynaptic neurone and triggers an opening of Ca ions enters into the depolarized terminal. This influx of Ca ions causes the presynaptic vesicles to fuse with the presynaptic membrane. This releases the neurotransmitters into the synaptic cleft. The neurotransmitters diffuse through the synaptic cleft and bind to specific postsynaptic membrane receptors. This binding changes the receptors into a ion channel that allows cations like Na to enter into the postsynaptic neuron. As Na enters the postsynaptic membrane, it begins to depolarize and an action potential is generated.


What determines if an action potential is initiated in the postsynaptic neuron?

Every time neurotransmitter is released from the presynaptic neuron it generates an excitatory post synaptic potential(EPSP) in the postsynaptic neuron. When the EPSP is greater than the threshold for excitation an action potential is generated.