Neurotransmitters influence the polarization of a neuron by
A) causing receptor channels to open, allowing positively charged sodium ions to flow into the neuron.
B) crossing into the neuron, bringing their charge with them.
C) causing neurons to expel sodium ions.
D) blocking ion flow.

Question

Quizplus · Accepted Answer

Neurotransmitters bind to receptor channels on the postsynaptic neuron's membrane, causing those channels to open. This allows positively charged sodium ions to flow into the neuron, depolarizing it and increasing the likelihood of an action potential being triggered.

Neurotransmitters Influence the Polarization of a Neuron by