Match the receptor with its function.
-Hering-Breuer expiratory reflex
A)Irritant receptors
B)Stretch receptors
C)J-receptors
D)Peripheral chemoreceptors
E)Central chemoreceptors

Question

Quizplus · Accepted Answer

The Hering-Breuer expiratory reflex is initiated by stretch receptors in the lungs, which detect changes in lung volume and send signals to the brainstem to regulate breathing.

Answer: A
 Irritant receptors are found in the airways and are activated by noxious gases or particles, triggering the cough reflex or other defensive respiratory reflexes.

Answer: C
 J-receptors, also known as pulmonary C-fiber endings, are located in the lung parenchyma and respond to changes in pulmonary capillary pressure or interstitial fluid volume, causing rapid and shallow breathing.

Answer: D
 Peripheral chemoreceptors are located in the carotid and aortic bodies and sense changes in arterial blood oxygen, carbon dioxide, and pH levels. They play an important role in regulating ventilation and maintaining acid-base balance.

Answer: E
 Central chemoreceptors are located on the ventral surface of the medulla oblongata and respond to changes in the pH of the cerebrospinal fluid, which reflects the level of carbon dioxide in the blood. They are the primary regulators of resting ventilation.

Match the Receptor with Its Function