Development of the hyoid bone (Os hyoideum) in the one-humped camel (Camelus dromedarius)

Document Type : Original Article

Authors

1 Department of Anatomy & Embryology, Faculty of Vet. Med., University of Sadat City, EGYPT

2 Department of Anatomy & Embryology. Fac. Vet. Med., University of Sadat City, EGYPT

Abstract

The hyoid bone can be divided into two parts. The first part supports the tongue and larynx and is regarded as the hyoid apparatus, the July 2012second part is directed dorsally articulating with the temporal bone and is termed the suspensory appa- ratus. The anatomy and develop- ment of the hyoid bone was previously studied in most mammals; however, in the camel it is still obscure. Therefore, the aim of this study is to follow the development of the hyoid bone in the one humped camel (Camelus dromedarius) from the anatomical and embryological point of view. The results revealed that the hyoid bone develops from eight ossification centers; none of them complete its ossification before birth.There is no separate center for the basihyoid of the hyoid bone of the camel but it is formed by the union of the rostral ends of the thyrohyoids.

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