Increasing the amount of action potentials that arrive at the presynaptic terminal will: (Can pick more than one) Increase the number of vesicles that fuse with the presynaptic membrane Increase the amount of depolarization in the terminal Increase the amount of neurotransmitter released. Increase the amount of Ca2+ that enters the presynaptic terminal.
Added by Alex M.
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Increasing the amount of action potentials that arrive at the presynaptic terminal will increase the depolarization in the terminal. This is because more action potentials lead to more depolarization events. Show more…
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The arrival of an action potential at the nerve terminal causes release of neurotransmitter from the presynaptic membrane. The release of neurotransmitters from the presynaptic membrane is triggered by hyperpolarization of the presynaptic membrane. an excitatory ligand binding to receptors on the presynaptic membrane. release of Ca++ from the endoplasmic reticulum in the nerve terminal. opening of voltage-gated Ca++ channels in the plasma membrane.
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The arrival of an action potential at the nerve terminal causes release of neurotransmitter from the presynaptic membrane. The release of neurotransmitters from the presynaptic membrane is triggered by opening of voltage-gated Ca++ channels in the plasma membrane. release of Ca++ from the endoplasmic reticulum in the nerve terminal. hyperpolarization of the presynaptic membrane. an excitatory ligand binding to receptors on the presynaptic membrane.
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What happens when an action potential reaches the axon terminal of a neuron? Voltage-gated Ca2+ channels open. Neurotransmitter is packaged into synaptic vesicles. Neurotransmitter binds to ligand-gated channels on the postsynaptic membrane. Electrical signal of the action potential passes to the postsynaptic cell through gap junctions. The synaptic terminals fuse with the presynaptic membrane.
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