The steps below refer to various stages in transmission at a chemical synapse:1. Neurotransmitter binds with receptors associated with the postsynaptic membrane.2. Calcium ions rush into neurons cytoplasm.3. An action potential depolarizes the membrane of the axon terminal.4. The ligand-gated ion channels open.5. The synaptic vesicles release neurotransmitter into the synaptic cleft.Which sequence of events is correct?

NERVOUS SYSTEM

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

The steps below refer to various stages in transmission at a chemical synapse:1. Neurotransmitter binds with receptors associated with the postsynaptic membrane.2. Calcium ions rush into neuron’s cytoplasm.3. An action potential depolarizes the membrane of the axon terminal.4. The ligand-gated ion channels open.5. The synaptic vesicles release neurotransmitter into the synaptic cleft.Which sequence of events is correct?

A	3
B	1
C	5
D	4
E	2

Explanation:

Detailed explanation-1: -nerve impulse arrive at end bulb. depolarization opens voltage-gated calcium channels, calcium flows into axon terminal. triggers exocytosis of synaptic vesicles with neurotransmitter. neurotransmitter released into synaptic cleft and diffuse. bind to receptors on postsynaptic neuron and opens ligand-gated channels. More items

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NEET PG DENTAL EXAM

EMBRYOLOGY

NERVOUS SYSTEM