Question

Select the correct statement regarding chemoreceptors

• A. It detects arterial pCO${}_2$ and pH.
• B. Increase in alveolar pCO${}_2$ causes an increase in breathing rate.
• C. Central chemoreceptors are located on the ventrolateral surface of the medulla oblongata.
• D. All of the above.

Answer 1

Answer: (D)

All of the above.

Chemoreceptors are specialized sensory receptors that can detect toxics or hazardous chemicals in the internal or external environment of the human body. They are composed of aortic and carotid body. Aortic body detects changes in blood oxygen and carbon dioxide but carotid body can detect the pH also along with oxygen and carbon dioxide. Central chemoreceptors are located on the ventrolateral surface of the medulla oblongata.

So the correct answer is 'All of the above'.