Professor Deshon is lecturing about ESPSs and IPSPs. He tells the class that in order to produce an IPSP, there needs to be an increase is permeability for _____.
A) chloride
B) calcium
C) sodium
D) carbon

Question

Quizplus · Accepted Answer

Inhibitory postsynaptic potentials (IPSPs) are hyperpolarizations of the postsynaptic membrane, which make it more difficult to generate an action potential. This hyperpolarization is produced by an increase in membrane permeability to negatively charged ions such as chloride ions (Cl-), which flow into the neuron, or an efflux of potassium ions (K+) out of the neuron. Calcium (Ca2+) and sodium (Na+) ions are positively charged ions that can produce depolarizations of the postsynaptic membrane, leading to excitatory postsynaptic potentials (EPSPs). Carbon is not an ion and does not play a role in synaptic transmission.

Professor Deshon Is Lecturing About ESPSs and IPSPs