BIOS 251 Week 4 Assignment; Case Study - Tissue
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Natasha Ngong Chamberlain University College of Nursing BIOS 251: Anatomy and Physiology Professor Zille June 2, 2024 Deliverables Normally, what type of tissue is found at the gastroesophageal junction (GE-junction)? Normally, the esophagus is coated with non-keratinized stratified squamous epithelium at the gastroesophageal junction, while the stomach is lined with simple columnar epithelium. Define adenocarcinoma, metaplasia, and dysplasia. Adenocarcinoma is a cancer that develops in glandular tissue, which surrounds some internal organs and generates and secretes mucus, digestive juices, and other fluids. Metaplasia is the transformation of one cell type into another, including conversions between tissue-specific stem cells. Dysplasia is the occurrence of faulty cells within a tissue or organ. Explain why Esophageal squamous cell carcinoma is more likely to arise from the upper and middle portions of the esophagus. The upper and middle esophagus are more susceptible to developing squamous cell carcinoma due to their histological composition, increased exposure to carcinogens such as smoke and alcohol, and chronic irritation an
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