Postsynaptic neurons have many connections with multiple other presynaptic neurons through their dendrites. Some of these connections are inhibitory, while others are excitatory. Inhibitory neurotransmitters have their effect by opening ligand-gated _____ channels on the dendrites it interacts with.

Question

Quizplus · Accepted Answer

Inhibitory neurotransmitters typically open ligand-gated chloride ion channels on the dendrites they interact with, causing an influx of negatively charged ions that hyperpolarize the postsynaptic neuron and make it less likely to fire an action potential. Choices A and B are not correct because sodium and calcium ion channels are typically associated with excitatory neurotransmitters, and their activation leads to depolarization and an increased likelihood of an action potential.

Postsynaptic Neurons Have Many Connections with Multiple Other Presynaptic Neurons