Magnus auricular nerve

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Human head nerves with the auricularis magnus nerve ( great auricular )

The auricularis magnus nerve (“great ear nerve”) is a sensitive spinal nerve that arises from the second and third neck segments (C2 and C3) of the spinal cord . Its original fibers form the cervical plexus ( plexus cervicalis ) with other cervical nerves .

After being isolated from the neck plexus, it pulls around the sternocleidomastoid muscle and perforates the deep neck fascia at the Erb point . Then it pulls under the platysma to the head and divides there into a front and rear branch.

The anterior branch ( ramus anterior ) passes through the tissue of the parotid gland and innervates the skin over the parotid gland.

The posterior branch ( ramus posterior ) innervates the skin on the back of the auricle and in the area of ​​the insertion of the sternocleidomastoid muscle. It establishes a connection with other head nerves in this region.

literature

  • Martin Trepel: Neuroanatomy. Structure and function. 3rd revised edition. Urban & Fischer, Munich a. a. 2004, ISBN 3-437-41297-3 .
  • Franz-Viktor Salomon: nervous system, systema nervosum. In: Franz-Viktor Salomon, Hans Geyer, Uwe Gille (Ed.): Anatomy for veterinary medicine. Enke, Stuttgart 2004, ISBN 3-8304-1007-7 , pp. 464-577.