30 Questions
What is the largest salivary gland, and what is the name of its main duct?
The parotid is the largest salivary gland, and its main duct is Stensen duct.
What percentage of saliva does the submandibular gland produce, and what is the name of its main duct?
The submandibular gland produces about 60% of saliva, and its main duct is Wharton duct.
What types of glandular epithelial cells are found in salivary glands?
The two types of glandular epithelial cells found in salivary glands are serous cells and mucous cells.
What is the shape and characteristics of serous cells?
Serous cells are pyramidal in shape with spherical nuclei at the base of their slightly basophilic cytoplasm.
What is the function and characteristics of myoepithelial cells?
Myoepithelial cells are specialized epithelial cells located within the basal portion of glandular and ductal parts in several exocrine glands.
What is the percentage of saliva produced by the sublingual gland?
The sublingual gland produces about 5% of saliva.
What is the characteristic of the epithelium lining the initial segments of interlobular ducts?
Stratified cuboidal epithelium
What type of gland is the parotid salivary gland?
Branched acinar gland
What is the difference between the submandibular gland and the parotid gland?
The submandibular gland has both serous and mucous acini, while the parotid gland has only serous acini.
What is the characteristic of the basal nuclei of mucous cells in the submandibular gland?
They are usually flattened, not rounded.
What is the characteristic of the sublingual gland?
It lacks a clear fibrous capsule.
What is the characteristic of the serous cells in the submandibular gland?
They look similar to those in the parotid gland.
What is the location of the liver in the human body?
The liver is located in the upper right quadrant of the abdominal cavity, below the diaphragm and protected by the rib cage.
What are the two main lobes of the liver?
The two main lobes of the liver are the right and left lobes, separated by the falciform ligament and round ligament.
What is the function of the Glisson capsule?
The Glisson capsule is a thin connective tissue that surrounds the liver and provides a delicate supportive framework.
What percentage of the liver is composed of parenchyma?
About 80% of the liver is composed of parenchyma, which is made up of hepatocytes arranged in a labyrinth of cellular plates.
What is the function of the interlobular C.T. septa?
The interlobular C.T. septa separate the hepatic lobules from each other and arise from the Glisson capsule.
What is the shape and size of a classic hepatic lobule?
A classic hepatic lobule has a prism form, about six sides, 1 mm in diameter, and 2 mm long.
What structures are present in a portal tract?
branches of the portal vein, bile duct, and hepatic artery
What is the central vein in a hepatic lobule surrounded by?
plates of liver cells (hepatocytes) that radiate from the central vein towards the periphery of the lobule
What is the characteristic of the endothelial cells lining the liver sinusoids?
a discontinuous layer of fenestrated endothelial cells
What is the location of the Disse space?
between hepatocytes and the sinusoids
What is the shape of hepatocytes?
large polygonal cells
How many portal areas are present at the periphery of each hepatic lobule?
3-6
What is the typical diameter of most pancreatic islets?
100-200 micrometers
What types of cells are seen in the islet using immunohistochemical methods?
Alpha, Beta, and Delta cells
What hormone is produced by Alpha cells in the pancreatic islets?
Glucagon
What is the percentage of pancreatic islet cells that are Beta cells?
About 70%
What is the function of the fine capsule of reticular fibers surrounding each islet?
Separates the islet from the adjacent exocrine pancreatic tissue
What is the arrangement of cells within the islet of Langerhans?
Lightly stained polygonal or rounded cells arranged in cords
This quiz covers the anatomy of salivary glands, including the parotid, submandibular, and sublingual glands, their structures, and functions.
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