Surgical anatomy : a treatise on human anatomy in its application to the practice of medicine and surgery . ree margin of the lips, lying immediately superficial tothe mucous membrane in the submucous layer. The labial glands are situated around the orifice of the mouth, in the sub-mucous layer of the lips. They are small lobulated bodies, about the size of asmall pea, and their ducts open into the mouth. They secrete a mucous the ducts of these glands become occluded, mucous retention cysts develop. Between the lips is the buccal orifice, which extends between the angles ofthe mout
Surgical anatomy : a treatise on human anatomy in its application to the practice of medicine and surgery . ree margin of the lips, lying immediately superficial tothe mucous membrane in the submucous layer. The labial glands are situated around the orifice of the mouth, in the sub-mucous layer of the lips. They are small lobulated bodies, about the size of asmall pea, and their ducts open into the mouth. They secrete a mucous the ducts of these glands become occluded, mucous retention cysts develop. Between the lips is the buccal orifice, which extends between the angles ofthe mouth. In harelip operations and after excision of a large segment of the lip inremoving an epithelioma, the mobility and elasticity of the lips, particularly ofthe lower lip, allow aj^proximation of the edges of the wound. The lymphatics from the median portion of the lower liji pass to a lymphaticgland situated just above the body of the h3oid bone ; those from the lateral por-tions pass to the submaxillary lymphatic glands, into which the lymphatics of theupper lip also empty. PLATE CXCIX, Superior meat. Genio hyoid Hyoid bone Mylo-hyoid Thyro-edge Ventricle ofThyroid ca ma sellae lae -pharynx ce of Eustachian tube palatepalate or pillar of faucessil in recess of fauces-pharynx riottis (cut edge)no-epiglottidean fold Laryngo-pharynxsrimal portion of larynx False vocal cord True vocal cord rimal portion of larynx Cricoid cartilage (cut)Ring of trachea VERTICAL SECTION OF MOUTH, PHARYNX, LARYNX, AND THE MOVTH. 213 The operation which is frequently performed upon the upper lip is for cor-rection of harelip which occurs upon one side, opposite the interval between thecanine and lateral incisor teeth and not in the median line, because the centralportion of the lip with the premaxillary bone is formed by the fronto-nasal processof the fetus, whereas each lateral portion of the upper lip develops from themaxillary process of the superior visceral arch. The lower lip is rarely
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectanatomy, bookyear1901
