An electrode is inserted into a chemosensory nerve leading away from a taste bud in the mouth of a dog. A mild acid solution is then flushed continuously over the sensors associated with this nerve. Initially, the nerve responds to this stimulation, but over time it ceases to carry action potentials. Which of the following processes would best explain this observation?

Question

Quizplus · Accepted Answer

The observed decrease in action potentials over time suggests adaptation of the sensory cells, where they become less responsive to the continuous stimulation of the mild acid solution. This is a common phenomenon in sensory systems, where prolonged or repeated stimulation can lead to decreased responsiveness. Translocation, depletion of neurotransmitter, and second messenger influences do not provide a satisfactory explanation for the observed decrease in action potentials. Action potentials arriving at the wrong area in the CNS is not relevant to this scenario.

An Electrode Is Inserted into a Chemosensory Nerve Leading Away