What does NOT occur in a photoreceptor during exposure to light? A) membrane hyperpolarization B) closure of Na⁺ channels in the outer segment C) increased transmitter release from the synaptic terminal D) decrease in cyclic GMP in the outer segment

Question

Quizplus · Accepted Answer

Increased transmitter release from the synaptic terminal does not occur in a photoreceptor during exposure to light. Instead, exposure to light leads to decreased transmitter release due to membrane hyperpolarization and reduced Ca2+ influx into the synaptic terminal. The other options (A, B, and D) all occur in a photoreceptor during exposure to light.

What Does NOT Occur in a Photoreceptor During Exposure to Light