Ars chirurgica a compendium of the theory and practice of chirurgery in seven books ... shewing the names, causes, signs, differences, prognosticks, and various intentions of curing all kinds of chirurgick diseases ... : to which is added Pharmacopoeia chirurgica, or, The medical store, Latin and English ... / by William Salmon ...

VIII. Wounds of the Cheeks.

XXXVI. If the Musculus la∣tus be wounded, whose use is, to draw the Cheeks from one side to theother, and perform some other Motions, without moving the lower Jaw, or opening the Mouth, the Functions of the Cheeks must ne∣cessarily be hurt: This Action is very manifest, in that Convul∣sion, or Contraction, called Spasmus Cynicus; for therein, this Muscle is extreamly stretcht, and contracted-towards its Ori∣ginal: Its Fibres are carried, partly up to the Lips, as in that part of the Muscle which ascends to the Os Pectoris, and middle of the Clavicula; and partly run obliquely from the same, as in that part of it which rises from the rest of the Clavicula, top of the Shoulder, the Sca∣pula, and Region of the Neck.

XXXVII. If the two Muscles descending Obliquely from the Cheeks, moving the upper Lip; and the two Muscles ascending from the end of the Jaw, where the Chin is, be wounded, the Fun∣ctions, or Actions of the Lips will cease, or be hurt. Now let the Wound in these Parts be made which way it will, it is always transverse, and cuts the Fibres across; because the Fibres of those Muscles are strangely in∣terwoven, and complicate one with another.

XXXVIII. If the Region which lies between the Ear, the Fore∣head, and Os Jugale, making an imperfect Circle, called the Tem∣ples, be wounded, the lifting up of the upper Jaw, and the shutting of the Mouth will be hurt. For the Crotaphites, or Temporal Mus∣cle lies there, which arising from the Os Verticis, Frontis, & Temporis, is fastned to the crooked Point of the lower Jaw, drawing it up to shut the Mouth. And the Fibres of this Muscle, run from the Circumference to the Centre, which they do in no other Muscle besides. A Wound in this Muscles causes also (as Hippocrates and Galen say) Con∣vulsions, Fevers, Sleepiness and Doting, because near to the prin∣cipal Nerves.

XXXIX. If the Space between the Os Jugale, and Root of the Ear, at the beginning of the neat her Jaw, be wounded, Mastication, or Chewing will be hindred. For there the Masseter, or Chewing Muscle lies, which you may ea∣sily feel with your Fingers, when the Mouth is open; arising from that part of the Head where the Processus Styloeides are, compre∣hending all the neather Jaw, and drawing it round.