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Which cell must have action potentials to produce one or more action potentials in the postsynaptic cell?
Wiki User
∙ 10y ago
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.
Wiki User
∙ 10y ago
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Which presynaptic cell must have action potentials to produce one or more action potentials in the postsynaptic cell?
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.
What is the difference between local potential and action potential?
Local potentials are graded potentials that can be depolarizing (excitatory) or hyperpolarizing (inhibitory), whereas action potentials are all-or-nothing electrical impulses that propagate along the axon of a neuron. Local potentials can summate and vary in amplitude, while action potentials have a fixed amplitude and duration. Additionally, local potentials can occur in dendrites and cell bodies, whereas action potentials typically occur in the axon.
Can neuroglia cells transmit action potentials from one nerve cell to another?
No, neuroglia cells cannot transmit action potentials. They provide support and insulation to neurons, helping in their functions. Action potentials are transmitted through the neurons themselves.
What happens when presynaptic cell's produce action potentials?
When presynaptic cells produce action potentials, it triggers the opening of voltage-gated calcium channels in the presynaptic membrane. This influx of calcium ions into the presynaptic cell triggers the release of neurotransmitter molecules from small, membrane-bound vesicles. The released neurotransmitters then diffuse across the synapse and bind to receptors on the postsynaptic cell, generating a response in the postsynaptic cell.
Action potentials originate at the?
Action potentials originate at the axon hillock of a neuron, where the cell body connects to the axon. This is where graded potentials from dendrites are summed up and depolarization reaches the threshold to trigger an action potential.
Which presynaptic cell must have action potentials to produce one or more action potentials in the postsynaptic cell?
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.
How does the end plate potential differ from a EPSP on a post synaptic cell?
The end plate potential (EPP) is specific to the neuromuscular junction, referring to the depolarization of the muscle cell membrane in response to acetylcholine release. An excitatory postsynaptic potential (EPSP) is a depolarization in a postsynaptic neuron due to neurotransmitter binding at a synapse. While both involve depolarization, an EPP is specific to neuromuscular junctions, whereas an EPSP can occur at various types of synapses in the nervous system.
What is the difference between local potential and action potential?
Local potentials are graded potentials that can be depolarizing (excitatory) or hyperpolarizing (inhibitory), whereas action potentials are all-or-nothing electrical impulses that propagate along the axon of a neuron. Local potentials can summate and vary in amplitude, while action potentials have a fixed amplitude and duration. Additionally, local potentials can occur in dendrites and cell bodies, whereas action potentials typically occur in the axon.
Can neuroglia cells transmit action potentials from one nerve cell to another?
No, neuroglia cells cannot transmit action potentials. They provide support and insulation to neurons, helping in their functions. Action potentials are transmitted through the neurons themselves.
What happens when presynaptic cell's produce action potentials?
When presynaptic cells produce action potentials, it triggers the opening of voltage-gated calcium channels in the presynaptic membrane. This influx of calcium ions into the presynaptic cell triggers the release of neurotransmitter molecules from small, membrane-bound vesicles. The released neurotransmitters then diffuse across the synapse and bind to receptors on the postsynaptic cell, generating a response in the postsynaptic cell.
The effect of a neurotransmitter on the postsynaptic cell occurs when the neurotransmitter?
binds to specific receptors on the postsynaptic cell membrane, leading to changes in the cell's membrane potential. This can either excite or inhibit the postsynaptic neuron, influencing the likelihood of an action potential being generated. Ultimately, the effect of the neurotransmitter can influence the communication between neurons in the nervous system.
Action potentials originate at the?
Action potentials originate at the axon hillock of a neuron, where the cell body connects to the axon. This is where graded potentials from dendrites are summed up and depolarization reaches the threshold to trigger an action potential.
Given that action potentials traveling down the axon of a particular neuron are always the same amplitude how is a stronger stimulus communicated to the next cell in the neural pathway?
A stronger stimulus is communicated to the next cell in the neural pathway by increasing the frequency of action potentials generated by the neuron. A stronger stimulus will trigger action potentials to occur more frequently, which results in a higher frequency of signals being transmitted to the next cell.
Do axons carry action potentials away from the cell body?
Yes, axons carry action potentials away from the cell body towards other neurons or target cells. This is how information is transmitted along the length of the neuron.
What is the fucntion of a nerve cell?
the transport of nervous impulses ( also known as action potentials)
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).
Action potentials can be generated by virtually all cells of the body because all cells possess cell membranes?
While all cells have cell membranes, action potentials are mainly generated by excitable cells like neurons and muscle cells due to the presence of voltage-gated ion channels. These channels allow for rapid changes in membrane potential, leading to the generation of action potentials. Non-excitable cells do not typically generate action potentials.
