The third being the Quadratus, springs from the bottom of the Chin before, and cleaves to the edge of the Lower-Lip.
The fourth is the Caninus, Antagonist to the Quadratus, beginning in the Upper-Jaw-Bone and being terminated in the Lower-Lip near the Corner of the Mouth.
The first of the common is the Zygomaticus, the Origine whereof is in the Zygoma and its Insertion in the Corner of the Mouth, to draw it toward the Ears; so that it is the Muscle which acts when we laugh.
The second of the common is the Buccinator or Trumpeter, which is swell'd when one sounds a Trumpet. It hath its rise at the Root of the Molar Teeth of both the Jaws, and is extended quite round about the Lips.
The odd Muscle, or the thirteenth in number, is the Orbicular, which makes a Sphincter round about the Lips to close or shut them up.
The Uvula or Palate of the Mouth hath four Muscles, whereof the two first are the Peristaphylini Externi, taking their rise from the Upper-Jaw, above the Left Molar Tooth, and being ty'd to the Palate by a thin Tendon.
The two others are the Peristaphylini Interni, which have their beginning in the Apophysis Pterygoides on the inside, and likewise stick to the Palate.
The Tongue, altho' all over Musculous and Fibrous, yet doth not cease to have its peculiar Muscles, which are eight in Number.
The first of these is call'd Genioglossus, taking its rise in the lower part of the Chin, from whence it is extended till it cleave to the Root of the Tongue before, to cause it to go out of the Mouth.