This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
[{'content': 'Increase in threshold level on applying subthreshold, slowly rising stimulus is known as \nSelect and explain. \nA. Adaptation, B. Accomodation, C. Refractoriness, D. Electrotonus', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Accommodation- Slow rising subthreshold stimulus failing to produce action potential even when the normal threshold levels are reached. This occurs because of inactivation of voltage-gated Na+ channels. \nAdaptation- Persistent application of suprathreshold stimulus fails to generate repetitive firing.\nRefractoriness- A stimulus to the nerve does not elicit a response.\nElectrotonus- When a current is passed through electrodes kept on the surface of a nerve, current passes through it resulting in a change in membrane potential and development of electrotonic potential.', 'role': 'assistant'}]