File:Education of Deaf-Mutes - A Manual for Teachers (1888) (14779994555).jpg

Identifier: educationofdeafm00thom (find matches)
Title: Education of Deaf-Mutes : A Manual for Teachers
Year: 1888 (1880s)
Authors: Thomas Arnold
Subjects: Education
Publisher: Wertheimer, Lea & Co.
Contributing Library: American Printing House for the Blind, Inc., M. C. Migel Library
Digitizing Sponsor: American Printing House for the Blind, Inc.

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r the base of thetongue, where it forms two small arches, divided by theuvula (Fig. 23, c,/). Its movements in speech are securedby two loop muscles, which act in opposite directions. The first, palato-pharyngeus, elevator of the pharynx(Fig. 23, e), is situated in the soft palate and wall of thepharynx. Above, it lies in the soft palate, taking originpartly from its fellow of the opposite side, partly from thefibrous tissues of the soft palate, and partly from the edge ofthe hard palate. Passing down from this position its fibres Fig. 16.—Deep Muscles of the Cheek, Phaeynx, etc. (Nearlyone-half natural size.) a, external pterygoid plate ; b, styloid process ;c, body of the lower jaw; d, hyoid bone; e, thyroid; /, cricoid; g,trachea ; m, oesophagus ; j, superior constrictor of the pharynx; k, middleconstrictor ; I, inferior constrictor; n, lower part of the stylo-glossus;0. stylo-pharyngeus: 2^, mylo-hyoid; q, hyo-glossus; r, thyro-hyoidmembrane; i, buccinator ; h, orbicularis oris.
Text Appearing After Image:
Fiy. 16. OF DEAF-MUTES. 187 run in the posterior pillars of the fauces on each side; theseare the hindmost of the two folds of membrane, enclosingthe tonsils. The muscle passes down in the pharyngeal wallto be attached to the posterior edge of the thyroid cartilage.By the combined action of the two muscles the soft palate isdepressed, and the pharynx and larynx raised, while themouth is cut off from the nose and throat by the approxima-tion of the pillars of the fauces. The second, levatorpalati or veli (Fig. 23, a), elevator of the palate, isattached to the apex of the petrous (bony) portion ofthe temporal bone, and to the adjoining margin of the Eusta-chian tubes (Fig. 14, e), whence it descends into the softpalate, covered by the superior constrictor (Fig. 16,/).Here it expands into a loop which lies behind the loopof the palato-pharyngeus. Its action raises the velum for-wards (Fig. 14, V, and Fig. 23) when nasal vowels are wanted.This action is further strengthened bytheAzygos uv

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