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26 Cards in this Set
- Front
- Back
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Describe an Endocrine glands.
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Lack ducts and release secretions into the bloodstream Secretory epithelial cells constitute the parenchyma of the gland, whereas connective tissue elements form its stroma
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Describe an Exocrine Gland
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Have ducts to convey material away from the secretory epithelium
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Describe the types of Multicellular glands.
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Simple gland: the duct does not branch Compound gland: the duct branches
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What secretory units does the parotid gland have and what do they look like?
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- Parotid gland : only contains serous secretory units will stain with H&E mostly E.
- branched acinar gland |
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What secretory units does the Submandibular gland have and what do they look like?
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- Submandibular gland : contains both pure serous and mixed secretory units will have spots with no stain and some with H&E
- Branched tubolacinar glands |
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What secretory units does the Sublingual gland have and what do they look like?
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Sublingual gland : contains both pure mucous and mixed secretory units. Will stain with H&E mostly H and have clear parts
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Describe merocrine secretions.
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Merocrine mechanism is by exocytosis
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Describe Apocrine secretions.
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Apocrine is where part of the apical cytoplasm is released along with the secretory material
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Describe Holocrine secretions.
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Holocrine is where the entire cell its contents are released
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Give examples of extrinsic glands.
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Salivary glands (parotid, sublingual, and submandibular), the pancreas, and the liver.
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What type of epithelilum does an intercalated duct have?
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Simple Squamous epithelium
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What type of epithelilum does an striated duct have?
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Cuboidal-to-columnar epithelium
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What type of epithelilum does an intralobular duct have?
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Cuboidal-to-columnar epithelium
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What type of epithelilum does an interlobular duct have?
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Pseudostratified columnar epithelium
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Describe the parotid gland
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Purely serous, compound, tubuloalveolar gland.
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Describe the sublingual gland
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Mostly mucous with some serous cells. compound, tubuloalveolar gland.
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Describe the submandibular gland.
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Classification
- Mixed, compound tubuloalveolar gland. Capsule - See preceding discussions of parotid and sublingual glands. Acini - Composed mostly of serous acini; however, groups of mucous acini with serous demilunes are also present. |
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Describe the exocrine function of the pancreas.
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- Performed by the acinar cells, centroacinar cells, and intercalated ducts. - Acinar cells secrete digestive enzymes - Duct cells supply alkaline buffer solution
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What do Alpha cells produce?
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Glucagen
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What do Beta cells produce?
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Insulin
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What do Delta cells produce?
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Somatostatin (a hormone that controls the release of insulin and glucagon, thus possibly reducing the volume of alkaline-rich pancreatic juices).
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What are C cells?
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Represent immature or degranulated islet cells.
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What are PP cells?
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Release pancreatic polypeptide, a hormone that may act to reduce the release of both enzyme-rich and alkaline-rich pancreatic secretions
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What are G cells?
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Release gastrin, a hormone that functions in modulating the release of HCl by the parietal cells of the stomach.
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What is the sphincter of oddi?
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- Directs the flow of bile into the gallbladder or into the lumen of the duodenum - Proximal to the papilla of Vater - Rormed by smooth muscle in the wall of the common bile duct
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What is the papilla of Vater (duodenal papilla)?
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Connects the common bile duct and the lumen of the duodenum
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