The receptor response decline despite of the continued presence of a stimulus is know as:: (A) Accomodation, (B) Adaptation, (C) Refractoriness, (D) Electrotonus
Answer is B. Adaptation: When a maintained stimulus of constant strength is applied to a receptor the frequency of the action potentials in its sensory nerve declines over time. This phenomenon is known as adaptation or desensitization. Ref: Ganong's Review of Medical Physiology, 21st Edition, Page 125