Mammalian Anatomy; A Preparation for Human and Comparative Anatomy

Mammalian Anatomy; A Preparation for Human and Comparative Anatomy

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1898 edition. Excerpt: ...cerato-hyal. The transverse bar is called the basi-hyal, or body of the hyoid. The posterior elements which support the thyroid cartilage of the larynx are known as the thyro-hyals. The different elements of the hyoid apparatus are joined together by intervening pieces of cartilage which vary in size according to the age of the specimen. The tympano-hyal (Figs. 315, 316) is an elongated, flattened piece of cartilage, the upper end of which is received into a pit in the auditory bulla of the skull. To it are attached the stylo-glossus and stylo-pharyngeus muscles. The stylo-hyal is the longest and, withal, the most slender of the elements. It is subcylindrical, slightly enlarged at the ends, and flattened on the shaft from without inward. It is faintly bowed forward, and its upper end is turned gently outward. It furnishes attachment to the stylo-glossus muscles. Fig. 315. '. Tympano-hyal.-Le/t Stylo-hyal. Right Tympano-hyal. Right Stylo-hyal. HYOID BONES, VIEWED FROM BEHIND, ABOVE, AND THE RIGHT SIDE. The epi-hyal is only half as long as the stylo-hyal, but is fully as wide; it appears, therefore, to be thicker. The upper end is hardly appreciably larger than the lower end. The shaft is flattened transversely and gently bowed outward. It furnishes attachment to the muscular constrictor of the pharynx. The cerato-hyal is less than half as long as the epi-hyal; the upper end is smaller than the lower end, which is joined to a plate of cartilage which forms the union between the basi-hyal and the thyro-hyal. To the cerato-hyal is attached the hyo-glossus muscle. The thyro-hyal is the thickest of all the hyoid bones. It is about as long as the epi-hyal, but can be distinguished from it by its emarginate upper and arcuate lower borders and more

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  • Paperback
  • 189 x 246 x 13mm | 435g
  • United States
  • English
  • black & white illustrations
  • 1236814584
  • 9781236814586