Exercise 38 Anatomy of the Digestive System

R E V I E W NAME ____________________________________ LAB TIME/DATE _______________________ S H E E T EXERCISE 38 Anatomy of the Digestive System Basic Histological Plan of the Alimentary Canal 1. The final anatomical options of the alimentary canal are listed beneath. Fill within the desk to finish the data. Subdivisions of the layer (if relevant) Wall layer mucosa submucosa muscularis externa serosa or adventitia Main features epithelium, lamina propria, (not relevant) ecretion, absorption safety safety, vascular provide for mucosa churning, mixing safety, anchoring round and longitudinal (not relevant) Organs of the Alimentary Canal 2. The tubelike digestive system canal that extends from the mouth to the anus is named the canal or the digestive tract. it has an innermost layer that runs obliquely alimentary three. How is the muscularis externa of the abdomen modified? ____________________________________________________________ ______________________________________ How does this modification relate to the operate of the abdomen? lets the abdomen ix, churn and transfer meals alongside trac whereas breaking it down and mixing it in gastric juices ____________________________________________________________ _______________________________________ squamous cells within the esophagus to columna four. What transition in epithelial kind exists on the gastroesophageal junction? within the gastric mucosa ____________________________________________________________ ______________________________________ easy columnar take up. How do the epithelia of those two organs relate to their particular features? Stratified squamous defend ____________________________________________________________ _______________________________________ 5. Differentiate between the colon and the massive gut. massive gut prolong from the ileocecal valve to the anus, bu the colon is split into the ascending, descending, sigmoid colon ____________________________________________________________ ______________________________________ 259 6. Match the gadgets in column B with the descriptive statements in column A. Column A l y o c n w h d b s h p i v e j x b v okay t r u f z y a g , t 1. 2. three. four. , v 6. 7. construction that suspends the small gut from the posterior physique wall fingerlike extensions of the intestinal mucosa that enhance the floor space for absorption massive collections of lymphoid tissue discovered within the submucosa of the small gut deep folds of the mucosa and submucosa that reach fully or partially across the ircumference of the small gut 5. areas that break down foodstuffs mechanically cell organ that manipulates meals within the mouth and initiates swallowing conduit for each air and meals y , eight. three buildings steady with and representing modifications of the peritoneum the “gullet”; no digestive/absorptive operate Column B a. b. c. d. e. f. g. h. i. j. okay. l. anus appendix round folds esophagus frenulum better omentum laborious palate haustra ileocecal valve massive gut lesser omentum mesentery 9. 10. olds of the gastric mucosa 11. 12. 13. sacculations of the massive gut projections of the plasma membrane of a mucosal epithelial cell valve on the junction of the small and enormous intestines m. microvilli n. o. p. q. r. s. t. u. v. oral cavity parietal peritoneum Peyer’s patches pharynx pyloric valve rugae small gut taste bud abdomen 14. major area of meals and water absorption 15. membrane securing the tongue to the ground of the mouth 16. absorbs water and varieties feces 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. rea between the tooth and lips/cheeks wormlike sac that outpockets from the cecum initiates protein digestion construction connected to the lesser curvature of the abdomen organ distal to the abdomen valve controlling meals motion from the abdomen into the duodenum posterosuperior boundary of the oral cavity location of the hepatopancreatic sphincter by which pancreatic secretions and bile cross serous lining of the stomach cavity wall principal web site for the synthesis of vitamin Ok by microorganisms area containing two sphincters by which feces are expelled from the physique bone-supported anterosuperior boundary of the oral cavity . tongue x. y. z. vestibule villi visceral peritoneum 260 Evaluate Sheet 38 7. Appropriately establish all organs depicted within the diagram oral cavity paratoid gland mouth sublingual gland pharynx submanibulargland esphogus gall bladder liver hepatic portal area cystic duct bile duct hepatic pancreatic sphincter accent pancreatic duct hepatic flexure jejunum ascending colon ileum rectum illiocecal vavle anal canal cecum appendix anus transverse colon decsending colon sigmond colon pancreas cardiac sphincter pyllitic sphincter Evaluate Sheet 38 261 eight. You've got studied the histological construction of quite a lot of organs on this laboratory. Three of those are diagrammed beneath. Establish and accurately label every. (a) ____________________(b) ________________________(c) ____________________ Accent Digestive Organs 9. Appropriately label all buildings supplied with chief strains within the diagram of a molar beneath. (Be aware: A few of the phrases in the important thing for query 10 could also be useful on this process. ) enamel dentin crown pulp cavity gum Neck periodontal ligament Bone root cementum rooteneal Blood vessels and nerves in pulp 262 Evaluate Sheet 38 10. Use the important thing to establish every tooth space described beneath. c b e f j p g j a 1. isible portion of the tooth in situ 2. materials overlaying the tooth root three. hardest substance within the physique four. attaches the tooth to bone and surrounding alveolar buildings 5. portion of the tooth embedded in bone 6. varieties the main portion of tooth construction; just like bone 7. produces the dentin eight. web site of blood vessels, nerves, and lymphatics 9. total portion of the tooth coated with enamel ; the variety of everlasting tooth is Key: a. b. c. d. e. f. g. h. i. j. 32 anatomical crown cementum scientific crown dentin enamel gingiva odontoblast periodontal ligament pulp root . 20 11. Within the human, the variety of deciduous tooth is 2,1,2,three 12. The dental formulation for everlasting tooth is 2 2,1,2,three Clarify what this implies. 2 incisors, 1 canine, 2 premolars and three molars on higher tooth. 2 incisors, 1 canine, 2 premolars and three molars on higher tooth. a number of by 2 2,1,zero,2 What's the dental formulation for the deciduous tooth? 2,1,zero,2 13. What tooth are the “knowledge tooth”? the third set of molars 2 20 14. Numerous sorts of glands type part of the alimentary tube wall or duct their secretions into it. Match the glands listed in column B with the operate/places described in column A. Column A a f 1. 2. . four. produce(s) mucus; discovered within the submucosa of the small gut produce(s) a product containing amylase that begins starch breakdown within the mouth produce(s) a complete spectrum of enzymes and an alkaline fluid that's secreted into the duodenum produce(s) bile that it secretes into the duodenum by way of the bile duct Column B a. b. c. d. e. f. duodenal glands gastric glands intestinal crypts liver pancreas salivary glands e d b c 5. produce(s) HCl and pepsinogen 6. discovered within the mucosa of the small gut; produce(s) intestinal juice 15. Which of the salivary glands produces a secretion that's primarily serous? ublingual salviary gland Evaluate Sheet 38 263 16. What's the function of the gallbladder? retailer bile bile duct , 17. Identify three buildings at all times discovered within the portal triad areas of the liver. portal venule and poral arteriole 18. The place would you look forward to finding the Kupffer cells of the liver? What's their operate? inside sinusoid partitions they line the sinus' and take away micro organism plasma protiens 19. Why is the liver so darkish pink within the dwelling animal? 20. The pancreas has two main populations of secretory cells—these within the islets and the acinar cells. Which inhabitants serves the digestive course of? acinar cells 264 Evaluate Sheet 38
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