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GI System

Name two contradictory functions of the GI system. protect the body from pathogens, extract nutrients from food.
Name the components of the digestive tract from top to bottom Oral Cavity, Esophagus, stomach, small intestine, large intestine, anus
Name the three specialized mineralized tissues that contribute to teeth enamel, cementum, dentin
Name the first deciduous set of teeth which forms in children 2 incisors, 1 canine, 2 molars
Name the set of teeth which form in adults 2 incisors, 1 canine, 2 premolars, 3 molars (third is the wisdom tooth)
describe the formation of teeth the pithelial lining of the oral cavity involutes into the undifferentiated tissues around the mouth to form a "bell" that surrounds some mesenchyme. The bell eventually detaches from the surface epithelium.
these cells produce enamel ameloblasts
these cells produce dentin odontoblasts
this portion of the gut tube is in direct contact with the external environment. It extracts nutrients from food and protects the body against pathogens mucosa
describe the change in epithelium that occurs at the gastroesophageal junction it changes from stratified squamous epithelium to simple columnar
name the different parts of the stomach cardiac, fundus, pyloris, body
these cells release intrinsic factor and HCL parietal cells
these cells release precursors of the digestive enzyme pepsin, rennin, and lipase chief cells
these are hormone releasing cells that line the digestive tract. each cell only releases one type of hormone enteroendocrine cells
describe some of the main functions of the small intestine raises the pH of fod bolus as it exits the pyloric sphincter, adds bile from the liver, digestive enzymes from pancreas, and absorbs nutrients as they are broken down.
this condition results when the body mounts an immune response to the protein found in gluten. the inflammatory reaction occurs within the mucosa and damages the villi ciliac disease
these cells are generally found at the base of the intestinal glands. Acidophilic granules near the apex of each cell contain lysozyme and other anti-microbial enzymes. Paneth cells
these structures are only found in the ileum and they are large lymph nodules in the lamina propria peyers patches
this condition results from removal of significant portions of the stomach or ileum. One cause of this disease is low blood cell count caused by vitamin B12 deficiency pernicious anemia
this structure of the digestive tract receives the bolus from the ileum and recovers water and electrolytes from it. the large intestine
Describe the epithelium of the lip keratinized stratified squamous epithelium with hair follicles embedded within it. It has bundles of skeletal muscle and substantial blood supply.
as it crosses the "vermillion border" the epithelium of the lip changes to this type parakeratinized stratified squamous
what is the main type of muscle found in the tongue skeletal muscle
what type of epithelium is found in the tongue keratinized stratified squamous epithelium to resist mechanical abrasion during chewing.
this mucosal structure on the surface of the tongue is a sharp extension and is not associated with taste buds filiform
these are little pale dots on the surface of the tongue that are associated with taste buds fungiform
these are large circular papillae near the poster third of the tongue containing taste buds and Circumvalate
longitudonal folds on the lateral aspect of the tongue that have taste buds and secretory glands foliate
these are lingual salivary glands of the tongue that flush food matter from the moats and allow tastants to reach the taste buds glands of von ebner
this is the outer layer of the gut tube composed of loose connective tissue that anchors the gut tube to nearby structures in confined areas. Adventitia
this is a very thin layer of connective tissue in the gut that is covered by a simple squamous epithelium. it secretes a serous fluid that lubricates the gut tube and associated structures inside the abdominal or pelvic cavity. serosa
this condition results from dysfunction of the esophageal sphincter, which keeps acidic gastric contents out of the esophagus. GERD
these are longitudonal folds in the stomach wall which facilitate the stomach's expansoin rugae
gastrin and somatostatin cells are located in the stomach. which one increases HCL secretion and which one decreases it? gastrin increases HCl secretion and somatostatin decreases HCL secretion.
this part of the stomach produces a large amount of mucous and contains gastrin and somatostatin pyloric region of stomach
this condition results form excess HCL resulting from an overproduction of gastrin, long term NSAID drug use, and infection with h.pylorii peptic ulcers
peyers patches are located exclusively on what portion of the small intestine? ileum
Created by: aferdo01



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