Diseases of the nose and throat; a text-book for students and practitioners . us muscle, and is known as the anterior half-arch, or anterior pillar of the fauces; it passes to the tongueand acts as a constrictor of the fauces. The posterior folds,half-arclies, or pillars of the fauces, contain the palato-pharyngeimuscles, which pass to the pharvnx. Between the anterior and (151) 152 DISEASES OF THE NOSE AND THROAT. posterior arch of each side is one of the faucial tonsils, thetonsils of daily speech, which form the lateral boundaries of thefauces. The anterior boundary of the fauces is an imag
Diseases of the nose and throat; a text-book for students and practitioners . us muscle, and is known as the anterior half-arch, or anterior pillar of the fauces; it passes to the tongueand acts as a constrictor of the fauces. The posterior folds,half-arclies, or pillars of the fauces, contain the palato-pharyngeimuscles, which pass to the pharvnx. Between the anterior and (151) 152 DISEASES OF THE NOSE AND THROAT. posterior arch of each side is one of the faucial tonsils, thetonsils of daily speech, which form the lateral boundaries of thefauces. The anterior boundary of the fauces is an imaginaryplane drawn between the anterior pillars; the posterior bound-ary is a similar plane drawn between the posterior pillars. Thebase of the tongue forms the lower boundary. The uvula partially divides the faucial space into thearcades. This little appendage is covered with mucous mem-brane, and is composed of connective tissue, glands, and theposterior extremities of the two azygos uvulae muscles, which Hard palate Soft palate Posterior half-archAnterior half-arch Tongue. Fig. 56.—The Normal Palate and Pharynx. lie side by side in the median line of the soft palate. Theirfunctions are to elevate the iTvula and aid the palato-pharyngeimuscles in separating the mouth and pharynx. The uvulaseems to aid in swallowing, in tone production, and in directingthe post-nasal glandular secretions to the lingual tonsil. In addition to the muscles considered, namely, the palato-glossi, palato-pharyngei, and azygos uvulae, there are two otherpairs of palatine muscles,—the levator palati, which serve toraise the soft palate, and the tensor palati, the action of whichis indicated. These various muscles aid both in deglutition andin vocalization, while the levator palati have another function,— ANATOATY AND PHYSIOLOGY OF PALATE AND PHARYNX. 153 that of aiding in opening the mouths of the Eustachian tubes,thus permitting aeration of the middle ears. Therefore, thesemuscles Imve much for w
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