Which of the following tissues normally has the highest percentage of mucus-secreting cells? A. Esophageal mucosa B. Oral mucosa C. Parotid gland D. Sublingual gland E. Submandibular gland

What usually initiates acute appendicitis? Select one: A. Eating a low-fiber diet B. Malnutrition C. Obstruction of the lumen of the appendix D. Rupture of the appendix E. Severe diarrhea O O O

1. Go to this figure shown below in your textbook. Examine each of the layers that make up the wall of the gut. You can think of these as concentric tubes, shown below. Label each of these layers, and indicate what type(s) of tissue or specialized cell(s) are contained in each. If a layer is subdivided into even more layers, add this to your label. If there are nerve plexi or specialized structures within or between layers, indicate this also. Aside from the mouth, name one other region of the gut does not fit this particular scheme? How does it differ? (CCCO Copyright © McGraw-H Education. Permission required for reproductio

The diagram shows a liver lobule. Long-term destruction of the hepatocytes, collapse of the histologic architecture, and production of fibrous material in the areas indicated by the arrow is most likely to result in which of the following? 1. A) Decreased intestinal motility 2. B) Gallstones 3. C) Increased central venous pressure 4. D) Increased hepatic venous pressure 5. E) Increased portal pressure

A.) What major transition in cell types happens from the esophagus into the stomach? B.) How are the major change discussed in question 8 related to the functions of the      esophagus versus the stomach? C) What type of epithelial tissue is the primary type that forms the inner mucosal layer        of the small intestine?

Peristalsis in the digestive system is caused by the _____.   a)  contraction of smooth muscle layers   b)  action of digestive enzymes   c)  closing of the epiglottis   d)  stretching of the salivary glands

Brunner's glands secrete an alkaline product that helps achieve optimal pH for the activity of pancreatic enzymes. Where are these glands located? A. At the base of villi throughout the small intestine B. In the epithelium of the ampulla of Vater C. In the mucosa and submucosa of the jejunum D. In the submucosa of the duodenum E. In the submucosa of the ileum

label a , b , c , d

The lips are muscular folds forming the anterior boundary of the oral cavity. A mucous membrane covers the lips internally and the skin of the face covers them externally. The vermillion border, which is the red part of the lips, is covered by keratinized epithelium that is the transition between the epithelium of the mucous membrane and the facial skin. The vermillion border can become chapped (dry and cracked), whereas the mucous membrane and the facial skin do not. Propose as many reasons as you can to explain why the vermillion border is more prone to drying than the mucous membrane or facial skin.

What causes massive inflammation and necrosis in acute pancreatitis? Select one: A. Anorexia B. Kidney stones C. Infection by intestinal microbes D. Ischemia E. Activation and spread of proteolytic enzymes O O