Beschreibung
Whimbrel (Numenius phaeopus) belongs to order Charadriiformes, family, Scolopacidae. It feeds on small invertebrates, which are picked from soft mud.Domestic duck (Anas platyrhnchos) belongs to order, Anseriformes, family, Anatidae.It feeds mainly on grains. Microscopic studies have been achieved to investigate the digestive system of vertebrate animals. Also, morphological studies of Birds tongue such as budgerigar have been reported. The histological studies mentioned that the tongue layers are; mucosa, submucosa and muscularis. The mucosal layer is constructed mainly from several rows of epithelial cell. Histological studies of gastrointestinal tract were established that the main layers of alimentary canal are; serosa, muscularis, submucosa and mucosa. The serosa represents the outermost layer while the mucosa is the innermost one which is in contact with the lumen. They noticed that the microscopic structure may differ according to the nature of food habits of the different birds.
Autorenporträt
Dr. Fatma M. A. Taki-El-Deen, Associate Professor in Comparative Anatomy, Faculty of Education, Ain Shams University, Egypt.
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