This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Physiology
Not a stimulus for normal/resting ventilation 
Select and explain. 
A. Stretch receptors, B. J receptors, C. PO2, D. PCO2
B: J receptors
Answer: B: J receptors 
Explanation: Juxtacapillary receptors, J-receptors, or pulmonary C-fiber receptors are sensory nerve endings located within the alveolar walls in juxtaposition to the pulmonary capillaries of the lung, and are innervated by fibers of the vagus nerve Ref: guyton and hall textbook of medical physiology 12 edition page number: 365,366,367