Which nerve conveys information from the thoracic and abdominal viscera?

Which nerve conveys information from the thoracic and abdominal viscera?

• A. Vagus nerve
• B. Olfactory nerve
• C. Hypoglossal nerve
• D. Optic nerve

Answer: (A)

The vagus nerve conveys information from the thoracic and abdominal viscera. As cranial nerve X, it carries visceral sensory input from the heart, lungs, esophagus, stomach, and much of the intestines up to the brainstem, allowing reflexive autonomic regulation and the brain to monitor internal organ states via the nucleus of the solitary tract. While it also sends parasympathetic output to many organs, the focus here is on sensory information from those viscera, which this nerve provides. In contrast, the olfactory nerve handles smell, the hypoglossal nerve innervates the tongue, and the optic nerve carries visual information from the retina.

The vagus nerve conveys information from the thoracic and abdominal viscera. As cranial nerve X, it carries visceral sensory input from the heart, lungs, esophagus, stomach, and much of the intestines up to the brainstem, allowing reflexive autonomic regulation and the brain to monitor internal organ states via the nucleus of the solitary tract. While it also sends parasympathetic output to many organs, the focus here is on sensory information from those viscera, which this nerve provides. In contrast, the olfactory nerve handles smell, the hypoglossal nerve innervates the tongue, and the optic nerve carries visual information from the retina.