A prize essay on the anatomy of the tongue, larynx, and pharynx of the ox / by Joseph Sampson Gamgee.

  • Gamgee, Sampson, 1828-1886.
Date:
1850
Catalogue details

Licence: Public Domain Mark

Credit: A prize essay on the anatomy of the tongue, larynx, and pharynx of the ox / by Joseph Sampson Gamgee. 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.

    14/22 (page 12)
    The hintcrior surface corresponds to the inferior border of the veliiin palati: it is covered by a mucous membrane, and is concave in its longitudinal axis, but convex from side to side. The poste- rior surface, covered by the laryngeal mucous membrane, is convex from above downwards, but laterally it is concave. It is attached by ligamentous expansion to the anterior border of the arytenoid cartilages, and with which it contributes to the formation of the glottal opening. The apex of the epiglottis is rounded off, and directed forwards towards the posterior surface of the velum palati. The interior of the larynx in the ox is far more simple than in the horse; in it we do not perceive any lateral ventricles or vocal ligaments. The glottal opening, which is situated at midway the length of the larynx, is bounded anteriorly by the thyro-cricoid ligament and base of the epiglottis, posteriorly by the arytenoid cartilages, and laterally by the margins of the epiglottis and arytenoids, and by the fibrous tissue uniting them. To the larynx belong six pairs and two single muscles; viz. the thyro-hyoidei, crico-thyroidei, crico-arytenoidei laterales, crico- arytenoidei postici, thyro-arytenoidei, and the aryteno-epiglottidei, with the arytenoideus, and hyo-epiglottideus. T/ie thyro-hyoideus is a flat muscle placed on each side of the larynx, and is broader anteriorly than posteriorly. It is attached anteriorly to the postero-inferior and lateral parts of the body of the OS hyoides; posteriorly it is inserted into the margin of the thyroid cartilage. It is related above to the thyro and hyn-pha- ryngeus, below to the sterno-thyroideus. Along the border of the thyro-hyoideus is a yellow elastic ligament, stretching from the inferior part of the hyoid bone to the extremity of the thyroid cartilage. Crico-thyroideus is a short muscle attached to the external surface of the cricoid cartilage and the posterior border of the thyroid. Crico-arytenoideus lateralis arises from the supero-anterior bor- der of the cricoid cartilage; its fibres then spread out and re- assemble to gain insertion into the apoj)hy&is at the posterior part of the arytenoid cartdagc.