The cockroach {Blatta orientalis) is in this case. The three glandular groups of its digestive apparatus are very favourable to experiment and arranged as follows : the upper region, consisting of an oesophagus, a crop, and a trituratory apparatus, bears oesopha-geal glands in bunches, called...
References 276–280 reveal the existence of a transient multiciliated epithelium in the fetal oesophagus of vertebrates. Article CAS PubMed Google Scholar Wells, J. M. & Melton, D. A. Vertebrate endoderm development. Annu. Rev. Cell Dev. Biol. 15, 393–410 (1999). Article CAS PubMed ...
Esophageal carcinoma (EC), a serious malignant cancer, is the sixth leading cause of cancer-related death [1,2]. Despite advances in multidisciplinary treatment, the 5-year relative survival rate remains less than 20% [3]. EC includes the following two primary pathological types: esophageal aden...
passage for air as well as food. It functions by preventing the entry of food particles into the windpipe. The epiglottis is an elastic cartilage, which serves as a switch between the larynx and the oesophagus by allowing the passage of air into the lungs, and food in thegastrointestinal ...
The alimentary canal is the pathway by which the food we eat passes from mouth to anus for further process of digestion. Explore more about alimentary canal at BYJU’S