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
J receptors are found in which of the following- 
Select and explain. 
A. Pulmonary interstitium, B. Alveolar capillaries, C. Terminal bronchiole, D. Respiratory muscles
A: Pulmonary interstitium
Answer: A: Pulmonary interstitium 
Explanation: Ans. (a) Pulmonary interstitium(Ref: Ganong, 25th ed/p.658)J receptors were discovered by an Indian physiologist A. S. PaintalThese receptors are located very close to the pulmonary capillaries (Juxtapulmonary receptors) in pulmonary interstitium