“Great auricular nerve”的意思、由来-开放百科全书

词条

Great auricular nerve

释义

Path
Branches
Additional images
References
External links

{{Infobox nerve
| Name = Great auricular nerve
| Latin = nervus auricularis magnus
| Image = Gray805.png
| Caption = The nerves of the scalp, face, and side of neck. (Great auricular visible below ear.)
| Image2 = Gray804.png
| Caption2 = Plan of the cervical plexus. (Great auricular labeled at top center.)
| Innervates = Cutaneous innervation of the inferior part of the auricle and the parotid region of the face.
| BranchFrom = Cervical plexus (C2-C3)
| BranchTo =
}}

The great auricular nerve (or greater auricular nerve) originates from the cervical plexus, composed of branches of spinal nerves C2 and C3. It provides sensory innervation for the skin over parotid gland and mastoid process, and both surfaces of the outer ear.

Path

It is the largest of the ascending branches of the cervical plexus. It arises from the second and third cervical nerves, winds around the posterior border of the sternocleidomastoideus, and, after perforating the deep fascia, ascends upon that muscle beneath the platysma to the parotid gland, where it divides into an anterior and a posterior branch.

Branches

The anterior branch (ramus anterior; facial branch) is distributed to the skin of the face over the parotid gland, and communicates in the substance of the gland with the facial nerve.
The posterior branch (ramus posterior; mastoid branch) supplies the skin over the mastoid process and on the back of the auricula, except at its upper part; a filament pierces the auricula to reach its lateral surface, where it is distributed to the lobule and lower part of the concha. The posterior branch communicates with the smaller occipital, the auricular branch of the vagus, and the posterior auricular branch of the facial.

Additional images

References

External links

Diagram at aapmr.org
{{SUNYAnatomyFigs|25|03|03}} - "Diagram of the cervical plexus."

1 : Nerves of the head and neck

随便看

开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。