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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    Brunnei’, G., On Vertigo Occurring in Affections of the Ear (Auditory Vertigo). Archives of Ophthalmology and Otology, II. No. 1, 1870, pp. 293-341. Vertigo may be occasioned by external pressure upon the drum-heads, by impulsions of air or licjuids into the tympanic cavity through the Eustachian tubes or by the passage of a galvanic current through the ears. In injecting sulphate of zinc, one and one-half grains to the ounce, in right ear, his patient felt as if drawn to the direction of same side (right). [He says erroneously that the patient had a tendency to fall towards the right side. The patient makes an effort to overcome the apparent (to the patient) falling to the right and falls to the left side in such a case]. Bryant, W. Sohier, Demonstration of the Movements of the Eustachian Tube. Archives of Otology, XXXV., 1906, p. 564. (No details reported). Bryant, W. Sohier, The Anatomy of the Child’s Ear, Emphasizing Points of Practical Importance. Arch, of Otol., XXXIV., 1905, pp. 80-83. Bony portion of Eustachian tube absent at birth. Cribriform bone interposed between the floor of the tympanum and the carotid canal at the jugular fossa, which is below the tympanum, not behind. The mastoid is but slightly developed. The Eustachian tube is narrower and much shorter in the infant. It measures about 20 m. as against about 40 m. in the adult from the anterior border of the sulcus tympanicus. Its lumen at the isthmus is 2 m. as against 4 m. in the adult. It lies in a horizontal plane. Its angle with the median plane is about 45° and outwards as in the adult. At puberty it assumes the adult position. The relative position of the pharyngeal mouth of the Eust. tube to the posterior pharyngeal wall and the velum palati is farther forward and slightly lower down. The fossa of Rosenmiiller does not form a deep depression till later in life. At birth the cavity of the middle ear, being filled with myxomatous tissue and detritus no air enters the tube immediately [but it is probable that the motion of the tensors produced by sucking, rapidly stimulates the opening of the tube]. / Bryant, W. Sohier, The Eustachian Tube, Its Anatomy and Its Movements; With a Description of the Cartilages, Muscles, Fasciae, and the Fossa of Rosenmiiller. Medical Record, LXXI., pp. 931-934, 1907. A detailed anatomical study of this region.