Ligand-Gated Ion Channels Are Found Within the Postsynaptic Neuron's Cell

question 57

Multiple Choice

Ligand-gated ion channels are found within the postsynaptic neuron's cell membrane. Why are ligand-gated ion channels critical to how synapses communicate information?

• A)Ligand-gated ion channels enable specific neurotransmitters released by presynaptic neurons to exert either excitatory or inhibitory effects on the postsynaptic cell.
• B)Ligand-gated ion channels open more rapidly than voltage-gated ion channels.
• C)Ligand-gated ion channels allow the postsynaptic cell to control, through intracellular signaling, to which neurotransmitters the postsynaptic cell responds.
• D)Ligand-gated ion channels are found within a neuron's dendrites but not its axon.

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