NERVES AND ARTERIES OF THE EXTERNAL EAR
- VernacularTitle:外耳的神经和动脉的解剖
- Author:
Qi LEI
- Publication Type:Journal Article
- From:
Acta Anatomica Sinica
1953;0(01):-
- CountryChina
- Language:Chinese
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Abstract:
1.Sixty-eight specimens were used to study the nervous and arterial supply of the auricle and the adjacent parts of the external ear.Among them,50 were dissected and observed with naked eyes;16 were observed with the aid of dissecting microscope to study the plexus-formation of the nerves;and 2 sets of serial sections of auricles were used to study the nerve-endings. 2.Four sensory nerves were found to be distributed to the external ear,i.e. auriculo-temporal,lesser occipital,greater auricular and vagus nerves. 3.The nerve plexus is richer on the medial side of the auricle than on the lateral side.On the lateral side,the plexus is found in the triangular fossa and the concha (cavum conchae and cymba conchae). 4.Two kinds of nerve-endings were observed in the structures of the external ear, i.e.the free nerve-endings in the epithelium and dermis,and the Bonnet plexus around the hair follicles.The free nerve-endings are more abundant in the triangular fossa and the concha. 5.The arterial supply of the external ear is mainly from the posterior auricular, superficial temporal and maxillary arteries.There are distinct anastomoses of the smaller branches between the former two arteries on the lateral side of the auricle.The anas- tomosis is more abundant in the triangular fossa and the conchal region than else- where. 6.The fact that the nerve plexus and arterial anastomosis are richer in the trian- gular fossa and the conchal region,and that the acupuncture at those regions for visceral pain is effective seems to indicate that there is some relation between nerve supply and acupuncture points.
