. A system of anatomy for the use of students of medicine (Volume 1). e maxilla tothe angle of the mouth, to the depressor labii inferioris within,and to the skin and fat without, gradually turning narrower :and is Inserted into the angle of the mouth, joining with the zygo-matics major and levator anguli oris. Use. To pull down the corner of the mouth. 2. Depressor Labii Inferioris, Arises, broad and fleshy, intermixed with fat, from the inferiorpart of the lower jaw next to the chin; runs obliquely upwards,and is Inserted into the edge of the under lip, extends along one halfof the lid, and
. A system of anatomy for the use of students of medicine (Volume 1). e maxilla tothe angle of the mouth, to the depressor labii inferioris within,and to the skin and fat without, gradually turning narrower :and is Inserted into the angle of the mouth, joining with the zygo-matics major and levator anguli oris. Use. To pull down the corner of the mouth. 2. Depressor Labii Inferioris, Arises, broad and fleshy, intermixed with fat, from the inferiorpart of the lower jaw next to the chin; runs obliquely upwards,and is Inserted into the edge of the under lip, extends along one halfof the lid, and is lost in its red part. Use. To pull the under lip and the skin of the side of thechin downwards, and a little outwards. 3. Levator Labii Inferioris, Arises, from the lower jaw, atthe roots of the alveoli of twodentes incisores and of the cani-nus; is Inserted into the under lip andskin of the chin, Use. To pull the parts, intowhich it is inserted, upwards. The three outward are, 1. Buccinator, Arises, tendinous and fleshy,from the lower jaw, as far back Fig. 18.*. * Fig. 18.—a, Depressor labii inferioris. b, Buccinator, c, Levator angulioris, e, Levator labii inferioris (levator menti;) this will be best seen in dissection 24* 282 MUSCLES OF THE FACE. as the last dens molaris and forepart of the root of the coronoidprocess; fleshy from the upper jaw, between the last dens mo-laris and pterygoid process of the sphenoid bone; from the ex-tremity of this process it arises tendinous, being continued betweenboth jaws to the constrictor pharyngis superior, with which itjoins; from thence, proceeding with straight fibres, and adheringclose to the membrane that lines the mouth, it is Inserted into the angle of the mouth within the orbicularisoris. Use. To draw the angle of the mouth backwards and out-wards, and contract its cavity, by pressing the cheek inwards,by which the food is thrust between the teeth. —The buccinatoracts principally in front on the commissure of the lips, w
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Keywords: ., bookcentury1800, bookid101532043x1nlmnihgov, booksubjectanatomy
