Document Detail

Gross morphology of the intra-oral rhamphotheca, oropharynx and proximal oesophagus of the emu (Dromaius novaehollandiae).
MedLine Citation:
PMID:  20353488     Owner:  NLM     Status:  MEDLINE    
Information on the gross morphology of the upper digestive tract of ratites is sparse. This is an important region considering that it is the first area for food selection and intake which is vital to the nutrition and growth of the animal and therefore its commercial viability. Twenty-three heads from sub-adult (12-14 months) emus were used to provide a definitive description of the oropharynx and proximal oesophagus. Besides supplying baseline morphological data of veterinary importance, this study also underlines the functional importance of this region. The mandibular and maxillary nails, and serrations on the rostral mandibular tomia, provide the emu with a formidable combination of gripping, tearing and pecking power. The folded oropharyngeal floor allows distention of the dorso-ventrally flattened cavity during eating and drinking. The laryngeal mound performs both respiratory and digestive functions, whereas the distensible proximal oesophagus supports the particular feeding method employed by ratites.
M R Crole; J T Soley
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-03-25
Journal Detail:
Title:  Anatomia, histologia, embryologia     Volume:  39     ISSN:  1439-0264     ISO Abbreviation:  Anat Histol Embryol     Publication Date:  2010 Jun 
Date Detail:
Created Date:  2010-05-26     Completed Date:  2010-11-04     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7704218     Medline TA:  Anat Histol Embryol     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  207-18     Citation Subset:  IM    
Department of Anatomy and Physiology, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, 0110 South Africa.
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MeSH Terms
Dromaiidae / anatomy & histology*
Epidermis / anatomy & histology
Esophagus / anatomy & histology*
Oropharynx / anatomy & histology*
Palaeognathae / anatomy & histology
Respiratory System / anatomy & histology

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