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Nerve: Inferior cervical ganglion
Diagram of the cervical sympathetic. (Lower cervical ganglion labeled at bottom right.)
Plan of right sympathetic cord and splanchnic nerves. (Inferior cervical ganglion labeled at upper right.)
Latin ganglion cervicale inferius
Gray's subject #216 980
Innervates Thyroid
MeSH [1]

The inferior cervical ganglion is situated between the base of the transverse process of the last cervical vertebra and the neck of the first rib, on the medial side of the costocervical artery.

Its form is irregular; it is larger in size than the middle cervical ganglion, and is frequently fused with the first thoracic ganglion.

It is probably formed by the coalescence of two ganglia which correspond to the seventh and eighth cervical nerves.

It is connected to the middle cervical ganglion by two or more cords, one of which forms a loop around the subclavian artery and supplies offsets to it. This loop is named the ansa subclavia (Vieussenii).

The ganglion sends gray rami communicantes to the seventh and eighth cervical nerves.

It gives off the inferior cardiac nerve, and offsets to bloodvessels.

Inferior cardiac nerve

See Inferior cardiac nerve

Offsets to bloodvessels

The offsets to bloodvessels form plexuses on the subclavian artery and its branches.

The plexus on thevertebral artery is continued on to the basilar, posterior cerebral, and cerebellar arteries.

The plexus on the inferior thyroid artery accompanies the artery to the thyroid gland, and communicates with the recurrent and external laryngeal nerves, with the superior cardiac nerve, and with the plexus on the common carotid artery.

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