Digestive glandsHongyaSunYangzhou University
1 Digestive glands Hongya Sun Yangzhou University
Digestive glandsOBJECTIVESThis chaptershould helpyouto:Comparemucousandserous secretory cellsinterms oftheirstructure,stainingproperties,andsecretoryproductsCompare the 3 major salivary gland types in terms ofcontent and distribution of serous and mucous cellsDescribethe division.structure andfunction ofthepancreasDescribetheboundaries andcontentsoftheclassicliverlobule,theportal space,andthehepaticacinusandunderstandtheliverfunctionsRelatethecomplexultrastructureofthehepatocytetoitsmany functions.2
2 OBJECTIVES This chapter should help you to: v Compare mucous and serous secretory cells in terms of their structure, staining properties, and secretory products. v Compare the 3 major salivary gland types in terms of content and distribution of serous and mucous cells. v Describe the division, structure and function of the pancreas. v Describe the boundaries and contents of the classic liver lobule, the portal space, and the hepatic acinus and understand the liver functions. v Relate the complex ultrastructure of the hepatocyte to its many functions. Digestive glands
GENERALDESCRIPTIONComponents ofdigestiveglands General features of digestiveglands
3 GENERAL DESCRIPTION Components of digestive glands General features of digestive glands
Componentsof digestiveglandssmall digestiveglands:--found within the wall of various regions of thedigestivetract--include: the esophageal glands, gastric glands,and intestinalglands,etc:large digestive glands:(accessory digestive glands--located outsidethedigestivetract-have ducts which open into the digestive tract--include:I.Salivaryglands(threepairs)I.PancreasIII. LiverIV.Gallbladder
4 Components of digestive glands v small digestive glands: -found within the wall of various regions of the digestive tract -include: the esophageal glands, gastric glands, and intestinal glands,etc. v large digestive glands: (accessory digestive glands) -located outside the digestive tract -have ducts which open into the digestive tract -include: Ⅰ. Salivary glands (three pairs) Ⅱ. Pancreas Ⅲ. Liver Ⅳ. Gallbladder
Tongue-ParotidglandSublingual glandSalivaryMouth (oral cavity)SubmandibularglandsglandPharynxEsophagusStomachPancreas(Spleen)LiverGallbladderTransversecolonDescendingcolonDuodenumSmallJejunumAscendingcolonintestine-LargelleumCecumintestineSigmoidcolonRectumVermiformappendix5AnalcanalAnus
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