Which nerve carries sensory signals from the carotid body to respiratory neurons in the medulla?

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A pine grosbeak with pink and gray plumage perches on a branch, eating red berries among autumn foliage. — Chemoreception Animals, such as this pine grosbeak, use chemoreception to respond to chemicals that can be tasted and smelled in their environments. Many of these chemicals affect behaviors such as food preference and defense.

Sensory signals from the carotid body are transmitted to respiratory neurons in the medulla via the carotid sinus nerve, which is a branch of the glossopharyngeal nerve (the ninth cranial nerve).12