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. The second is term'd _Styloglossus_, its Rise being in the _Apophysis Styloides_, from whence it passeth to the side above the Tongue, to lift it up. The third bearing the Name of _Basiglossus_, commenceth in the _Basis_ or Root of the _Os Hyoides_, and thence insinuates it self into the Root of the Tongue, to draw it back to the bottom of the Mouth. The fourth is the _Ceratoglossus_, deriving its Original from the Horn of the _Os Hyoides_, and cleaving to the side of the Tongue to draw it on one side: The Action of these Muscles of both sides together, causeth an Orbicular Motion in the Tongue. To these some add a fifth {28} Pair of Muscles, call'd _Myloglossus_, which serves to draw it obliquely upward. _What is the Action of the _Os Hyoides_ in the Throat, and how many Muscles hath it?_ The use of the _Os Hyoides_ is to consolidate the Root of the Tongue; and it hath five Muscles on each side, which keep it as it were hung up. The first of these, call'd the _Geniohyoideus_ hath its beginning in the Chin on the inside, and adheres to the top of the _Os Hyoides_, which it draws upward. The second is the _Mylohyoideus_, whose Origine is in the inner side of the Jaw, from whence it cleaves side-ways to the Root of the _Os Hyoides_, which it draws upward, and to one side. The third is the _Stylohyoideus_, which after it hath taken its rise in the _Apophysis Styloides_, is fasten'd to the Horn of the _Os Hyoides_, to draw it toward the side. The fourth is the _Coracohyoideus_, which springing up from the _Apophysis Coracoides_ of the _Omoplata_, cleaves to the Root and side of the _Os Hyoides_, to draw it downward and to the side. The fifth is the _Sternomohyoideus_, that hath its beginning in the Bone of the _Sternum_ on the inside and is inserted in the Root of the _Os Hyoides_, which it draws downward. _How many Muscles hath the _Larynx_?_