Human anatomy, including structure and development and practical considerations . otherhand, are numerous in tlie ujjper part, scarce l:)eh^\v ; they He j)artly within themucosa antl partly in the submucous tissue and between the muscular bundles. Thecharacter of the ijharyn^eal e])ithelium varies in dith-rent localities. In the the stratified ciliated columnar cells of the nasal fossa are continued as thecoverin^j of the pharynjj;eal mucous membrane, while the oro-pharynx is clothed withstratified squamous epithelium continued from the mouth. The last-named typeof epithelium lik
Human anatomy, including structure and development and practical considerations . otherhand, are numerous in tlie ujjper part, scarce l:)eh^\v ; they He j)artly within themucosa antl partly in the submucous tissue and between the muscular bundles. Thecharacter of the ijharyn^eal e])ithelium varies in dith-rent localities. In the the stratified ciliated columnar cells of the nasal fossa are continued as thecoverin^j of the pharynjj;eal mucous membrane, while the oro-pharynx is clothed withstratified squamous epithelium continued from the mouth. The last-named typeof epithelium likewise covers the greater part of the laryngeal portion. Theexact distribution of the two varieties of cells is subject to considerable individualvariation. The ciliated columnar type extends laterally to include the openingsof the Eustachian tubes, but lower down gives place to the squamous. By no Fig. 1354. Ease of skull Nasal septum V - Nasopharyngeal fold^^ Lymphoid tissue Posterior pillar of faucesFaucial tonsil Pharyngo-epiglottic fold ,*«\M l],rvula Cut edge of pharsnx. Dorsum of tongue . „? (.losso-epiglottic fossa Median glosso-epiglottic foldEpiglottis, turned backSinus pyriformis Posterior surface of larynx Pharynx opened from behind ; epiglottis turned back. means the entire posterior surface of the soft palate is clothed with ciliated colum-nar cells, since the entire uvula and the edges of the palato-pharyngeal folds areinvested with stratified squamous epithelium. The latter also covers the posteriorwall of the pharynx and extends above as far as the vault. When coxered withciliated epithelium, the mucous membrane is redder, thicker, and contains moreglands, but fewer papillae, than in those parts in which the squamous cells containing much lymphoid tissue, fat is limited to a few deeply seated lobulesof adipose tissue. Lymphoid Structures.—The upper part of the pharynx contains manylymphoid collections which make the surface uneven. They are mu
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Keywords: ., bookauthormc, bookcentury1900, bookdecade1910, booksubjectanatomy
