An action potential causes the release of neurotransmitters by:________.

Biology

1 answer:

seraphim [82]3 years ago

5 0

Answer:

b) opening calcium pores in the membrane

Explanation:

The opening of calcium ions channels facilitates the migration of vesicles containing neurotransmitters in the pre-synaptic neurons to the tip of the post-synaptic membrane. at the neuromuscular junction These neurotransmitters can either be cholinergic or non-chorlinergic. At the tip of the pre-synaptic membranes the vesicles empty their neurotransmitter contents into the synapse.

The neurotransmitters, diffuse through the neuromuscular junction to bind with the receptors on the post-synaptic membrane on the post-synaptic neuron. This stimulates opening of ligand gated sodium ions, and sodium ions diffuse into the post-synaptic neuronal membrane, to cause depolarization. if the stimulus is up to the threshold levels it generate action potential.

Therefore , more calcium ions channels opening produces; more diffusion of neurotransmitters;leading to opening of more sodium channels for depolarization; and IPSP or EPSP generation.

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