Regional anatomy in its relation to medicine and surgery . eneath the external jugular vein. 17. The sterno-hyoid muscle. 18. The interspace between the sternal and clavicular por- tions of the sterno-mastoid muscle. The posterior branch of the temporal artery. The auriculo-temporal nerve. The temporal branches of the facial nerve. The temporal artery. The remains of the parotid gland, dissected away to show the relations of the facial nerve, and the pes anse^ vessels and nerves to the buccinator splenius capitis auricularis magnus cervical branch of the
Regional anatomy in its relation to medicine and surgery . eneath the external jugular vein. 17. The sterno-hyoid muscle. 18. The interspace between the sternal and clavicular por- tions of the sterno-mastoid muscle. The posterior branch of the temporal artery. The auriculo-temporal nerve. The temporal branches of the facial nerve. The temporal artery. The remains of the parotid gland, dissected away to show the relations of the facial nerve, and the pes anse^ vessels and nerves to the buccinator splenius capitis auricularis magnus cervical branch of the facial oecipitnl trapezius occipitalis minor spinal accessory descending cervical nerves (sternal, clavicular, and acromial branches).The scalenus medius external jugular supra-clavicular fossa, occupied with fat and superficial veins. N. B.—The transverse facial artery in this instance supplies the coronary arteries which usually arise from the facialartery proper. Plate!9 Vol I. l^/ssect^. Pholo^rdDhed and Cohrea from Nature by OeoffGe Mc. C/.^llan, MO. Copyn^ht, George Mc ^M D THE REGION OF THE PAROTID GLAND. 133 The gland is therefore in a measure enclosed in a fascial envelope. Thisis normally very thin over the deeper parts, but when the gland is affected?with any chronic morbid enlargement it is thickened, and may be thenmore properly regarded as a sac. There is, furthermore, a peculiar in-vagination of the deep cervical fascia between the anterior surface of thestyloid process and the posterior border of the external pterygoid muscle,which reaches to the wall of the pharynx, so that in post-pharyngealabscess there is often an external swelling in the parotid region. Inseveral cases in the authors experience, where the pharyngeal abscesswas so large that it was feared the evacuation of the pus through directincision by the mouth might lead to suffocation by its entering the glotti
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