alleryStart learning →Where are the peripheral chemoreceptors located?
AIn the carotid arteries and the aortic arch
BIn the brain and the brainstem tissue
CIn the alveolar walls and bronchioles
DIn the pleural cavity and diaphragm
Answer & Solution
Correct answer: A. In the carotid arteries and the aortic arch
1. Chemoreceptors are divided into central and peripheral by their location.
2. Peripheral chemoreceptors lie in the carotid arteries and the aortic arch.
3. They sense arterial hydrogen ion levels and large changes in blood oxygen.
4. Receptors in the brain and brainstem are the central chemoreceptors, so the second option names the other class.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 22 "The Respiratory System", section 22.3 The Process of Breathing_
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