Juxtacapillary (J) receptors are located in the alveolar walls near the capillaries. What is their primary stimulus and resulting effect?
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Correct answer: Pulmonary capillary congestion or edema, causing rapid shallow breathing
J-receptors are stimulated by engorgement of pulmonary capillaries or accumulation of interstitial fluid (edema). Their activation leads to a sensation of dyspnea and a reflex pattern of rapid, shallow breathing.
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