A study of some casts of the infantile pharynx : with special reference to the Eustachian tube ; A note on Eustachian obstruction ; Partial bibliography of recent papers relating to the Eustachian tube / by William C. Braislin.

  • Braislin, William C. (William Coughlin), 1865-1948.
Date:
1909
Catalogue details

Licence: In copyright

Credit: A study of some casts of the infantile pharynx : with special reference to the Eustachian tube ; A note on Eustachian obstruction ; Partial bibliography of recent papers relating to the Eustachian tube / by William C. Braislin. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    G palati, are both relatively Avell developed; both, however, taking more nearly horizontal than vertical directions than in the adnlt, from origins to attachments, dne, in part, to the lack of development of the pterygoid processes of the sphe- noid and to the inferior depth of the cavity of the naso- pharynx in the infant. The door of the pharynx of the new-born compares closely with that of the adnlt. Its palatal portion is of greater diameter, antero-posteriorly. This is dne to the vomer be- ing relatively smaller and more anteriorl.y placed in the infant and the hard i)late likeAvise relatively shorter, antero- jiosteriorly. 44 FIG. 5. Vei'tical cross-sections tlirougli three casts of naso-pharynx of new- born (slightly enlarged). Figure on the left, at plane of mouths of Eustachian tubes; middle figure, at plane of posterior edge of septum; figure at right represents a cross-section within posterior nares. The differences in the form of the infantile and adult naso-jiharynx depend directly' and primaril}' on the bony framework of the surrounding .structures so that it is nec- essary to refer briefly to these, in order to elucidate the main causes of differences of the size and shape of the naso- pharyngeal cavity of the new-born. The sphenoid bone presents at birth little evidence of the siibsefiuently marked development of the ])terygoid pro- ces.ses of the adult. The vertical jilates of the palate bones are likewise very short. The vomer, which in adult life extends its superior articulation to the posterior edge of the