010514 vm Flashcards
serous vs mucous acini-what are their differences
nuelci of mucous cells are flattened
those of serous cells are oval
serous demilune
arrangement in which mucous acini are covered by serous cells
gland composition in parotid, submandibular, and sublingual glands
parotid: serous
submandibular gland: mostly serous, some mucous (serous MORE)
sublingual gland: mostly mucous, some serous
circumvallate papillae
largest papillae on tongue and the least common
have deep cleft around
fungiform papillae vs filiform papillae
filiform papillae are short
skeletal muscle fibers are present in which part of esophagus
upper and middle third
epithelium changes how from esophagus to stomach?
stratified squamous to simple columnar
where are chief cells located? (as in portion of the stomach)
in fundic portion
large, round, eosinophilic cells with central nuclei in the gastric glands
parietal cells
histologic organization of 3 major salivary glands
secretory portion of parenchyma and stromal tissue
secretory portion has serous and/or mucous cells arranged in tubules or grape clusters called acini
duct system has hiearahcy or 3 types-intercalated, striated, and excretory
each salivary gland is divided how?
connective tissue capsule forms septae that penetrate the parenchyma of the gland to divide it iunto lobules
septae also carries vascular and neural components to the secretory cells and ducts
intercalated ducts
smallest ducts in salivary gland
striated ducts
several intercalated ducts merge to form striated ducts in salivary gland
excretory ducts
striated ducts join to form excretory ducts in connective tissue septa of salivary gland
intralobular ducts
intercalated ducts and striated ducts within the parenchyma are called intralobular ducts
