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Sensory neurons in the great arteries mediate classical reflexes including the baroreceptor reflex and hypoxic ventilatory response. Vagal afferents reach the aortic arch and subclavian artery via the aortic depressor nerve (ADN), which branches from the superior laryngeal nerve (SLN). Glossopharyngeal afferents reach the carotid body and sinus via the carotid sinus nerve (CSN), which branches from the main glossopharyngeal trunk.
