?(see Figure 4.11c) This image on the left illustrates the activation of which of the following types of receptor?

Question

Quizplus · Accepted Answer

The image shows the activation of an ionotropic glutamate receptor due to the binding of glutamate. This type of receptor is characterized by a rapid influx of ions upon activation, leading to a fast excitatory postsynaptic potential (EPSP). Among the three types of ionotropic glutamate receptors (NMDA, AMPA, and kainate), only NMDA receptors require both glutamate and depolarization of the postsynaptic membrane to remove a magnesium blockade and allow calcium influx. Therefore, the image is most likely depicting the activation of an NMDA glutamate receptor. Nicotinic dopamine and GABAA receptors are not glutamate receptors, and kainate receptors do not require depolarization to be activated.

?(See Figure 4