Superior ganglion of vagus nerve
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Superior ganglion of vagus nerve is a part of the vagus nerve, which is the tenth cranial nerve or CN X, and interfaces with parasympathetic control of the heart, lungs, and digestive tract. The superior ganglion of the vagus nerve is one of the two ganglia of the vagus nerve, located in the jugular foramen.
Etymology[edit | edit source]
The term "vagus" comes from the Latin word for "wandering". This is because the vagus nerve wanders from the brain into organs in the neck, chest, and abdomen. The term "ganglion" is derived from the Greek word "ganglion", which means "knot" or "mass", referring to the knot-like appearance of these structures.
Structure[edit | edit source]
The superior ganglion of the vagus nerve is small and cylindrical, about 2.5 cm in length. It is located in the jugular foramen, a large aperture in the base of the skull. The ganglion gives off several small branches to the pharynx, the Eustachian tube, and the meninges of the posterior cranial fossa.
Function[edit | edit source]
The superior ganglion of the vagus nerve contains the cell bodies of neurons that send sensory information to the brain from the throat, heart, lungs, and abdomen. It plays a crucial role in the parasympathetic nervous system, which is responsible for stimulating "rest and digest" or "feed and breed" activities.
Clinical significance[edit | edit source]
Damage to the superior ganglion of the vagus nerve can result in a variety of symptoms, including difficulty swallowing, hoarseness, and loss of voice. This is due to the nerve's role in controlling the muscles of the throat and voice box.
See also[edit | edit source]
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