Which cranial nerves innervate baroreceptors and chemoreceptors?

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The main idea is that visceral sensory information from cardiovascular receptors is carried to the brainstem mainly by two cranial nerves: glossopharyngeal (IX) and vagus (X). Baroreceptors in the carotid sinus send their signals through IX, while baroreceptors in the aortic arch send theirs through X. Chemoreceptors, which monitor blood oxygen, carbon dioxide, and pH, also relay their input via IX (carotid bodies) and X (aortic bodies). All of this information converges on the nucleus tractus solitarius in the medulla, allowing autonomic reflexes that regulate heart rate, blood pressure, and respiration. The other nerves listed are involved in somatic motor control or other sensory functions and do not carry these visceral cardiovascular afferents.