Concept explainers
To discuss:
Two types of intestinal motility and their functional difference.
Introduction:
The small intestine lies between the stomach and the large intestine. The small intestine consists of three parts namely the jejunum, the duodenum, and ileum. It aids in digestion and absorption of ingested food. The tissue layers of the small intestine are similar to the layers of the esophagus and the stomach. Simple columnar epithelial cells line the lumen. The externa possess a thick circular layer inside. The jejunum and ileum are covered with serosa on all sides, but in the case of duodenal serosa, it is seen only on the anterior surface.
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Chapter 25 Solutions
LSC (CONCORDIA UNIV ST PAUL) BIO 315/316: B&N DPF Connect with APR and Phils Online Access for Anatomy and Physiology: The Unity of Form and Function 180 Day Access ENTRP
- Histological description of the major organs of digestion and its coats or layers. Explain in a long explanation Layers of gallbladder: mucosa(inner layer of epithelium and loose connective tissue) a muscular layer perimuscular layer serosa(outer covering) The small and large intestinal wall has four layers: The outermost serosa muscularis submucosa innermost mucosa.arrow_forwardhistology of the stomach and identify the various cells and its secretionsarrow_forwardThe consequences of the failure to digest lactose in the small intestine.arrow_forward
- On the histological preparation of the walls of the small intestine: there * are groups of cells at the bottom of the crypt, in the apical part of which there are large acidophilic secretory granules; the cytoplasm is basophilic. What are these cells? goblet cells. Columnar cell with a border. O Endocrine cells. Cells without border. Paneth cells.arrow_forwardDrawing colored of the major organs of digestion and its coats or layersarrow_forwardHow nutrients absorbed in the small intestine pass into the general circulation.arrow_forward
- Increase, decrease or no change (with explanation)  Influence of removing tight junctions from the intestinal epithelium on the ability of digestive enzymes to break down the epithelial basement membrane.arrow_forwardAll the structures of the alimentary canal have 4 similar major histological tissues . Which of the following descriptions of the tissue layers contains innacurate information? A) The mucosa layer consits of a simple epithelium (responsible for absoprtion), a lamina proprioa (supports the epithelium) and muscularis mucosae (thats ivolved with peristalsis. B) The muscularis externa has 2 or 3 layers of smooth msulce and is involced with persistalsis C) The submucosa layer is a connective tissue layer that anchors the mucosa layer and contains many blood vessels, lyphatic vessels, and nerves D) The serosa layer is a connective tissue layer that tethers the alimnetary canal to the appropirate body cavitities. I believe that D is false but I am not certainarrow_forwardOn the histologic section of the glands stomach's fundus, relatively large electron-microscopically cells with acidophilic cytoplasm can be seen, and in these cells there is a complicated system of intracellular tubules. What component of gastric juice is formed due to the activity of these cells? Serotonin Mucus Gastrin O Hydrochloric acid Opepsinogenarrow_forward
- Histological description of the major organs of digestion and its coats or layers. Explain each in long explanationarrow_forwardHistological description of the major organs of digestion and its coats or layers. Explain in a long explanation  Layers of stomach: Mucosa (innermost layer) Submucosa(second layer) Muscularis(third layer) Subserosa Serosa(outermost layer) Layers of liver: Outer serous layer which covers the entire liver Inner fibrous layerarrow_forwardHistology of the intestine 4 layers are mucosa, submucosa, muscularis, and serosa Describe the tissue types found in each 4 layers and discuss their functionsarrow_forward
- Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage LearningUnderstanding Health Insurance: A Guide to Billin...Health & NutritionISBN:9781337679480Author:GREENPublisher:Cengage
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