Histo Flashcards
(holocrine/apocrine/merocrine): uses lysis
holocrine
(holocrine/apocrine/merocrine): uses shedding
apocrine
(holocrine/apocrine/merocrine): uses exocytosis
merocrine
(holocrine/apocrine/merocrine): sebaceous
holocrine
(holocrine/apocrine/merocrine): mammary
apocrine
(holocrine/apocrine/merocrine): sweat
merocrine
(simple/compound/both) glands: can be branched
compound
four things in the sebum
triglycerides, cholesterol, squalene, wax esters
three cell types found in sweat glands
pale, dark, myoepithelial
function of myoepithelial cells
contract to expel secretory product
in which layer are myoepithelial cells found
basal lamina
three types of acini in salivary glands
serous, mucous, mixed
(serous/mucous/mixed) acini secretions: sIgA
serous
(serous/mucous/mixed) acini secretions: mucins
mucous
(serous/mucous/mixed) acini secretions: serous demilunes
mixed
what are serous demilunes
fixation artifact
in which glands are the basal striations found
salivary glands, intralobular ducts
function of basal striations
house mitochrondria, active transport of ions
how can you differentiate the pancreas from parotid gland
islet of Langerhans
content of zymogenic granules
proenzymes
which cells are responsible for producing bicarbonate in the pancreas
intercalated ducts, interlobular ducts
four layers that make up wall of GI tract
mucosa, submucosa, muscularis externa, serosa or adventitia
four types of papillae in tongue
filiform, fungiform, foliate, circumvillate
esophageal glands proper are found in which layer of the esophagus
submucosa
three major types of gastric glands
cardiac, gastric, pyloric
(cardiac/gastric/pyloric) gastric glands: short pits, mostly mucous
cardiac
(cardiac/gastric/pyloric) gastric glands: medium pits, four cell types
gastric
(cardiac/gastric/pyloric) gastric glands: very long pits
pyloric
parietal cells secrete (two things)
HCl and intrinsic factor
structure of parietal cells
binucleate, eosinophilic, intracellular canaliculus
gastric chief cells synthesize (two things)
pepsinogens and gastric lipases
structure of gastric chief cells
columnar, serous cells, in basal half of gastric gland
what do enteroendocrine cells produce (three things)
gastrin, somatostatin, ghrelin
where are enteroendocrine cells found
base of gastric glands
three structural modifications in SI that facilitate absorptive process
microvilli, striated border, plicae circularis
which glands secrete alkaline mucous from the submucosa to protect the duodenum from gastric acid
Brunner’s
where is an M cell and what does it cover
in ileum epithelium, covers Peyer’s patches
basement membrane under M cell is (discontinuous/continuous)
discontinuous
(colon/appendix/rectum): plicae semilunaris, taenia coli
colon
(colon/appendix/rectum): less lymphoid tissue, no taenia coli
rectum
(colon/appendix/rectum): fewer and shorter crypts, no taenia coli
appendix
where are stem cells located in the small intestine
base of crypts
turnover time of paneth cells
30 days
parietal cells secrete (HCl/mucous)
HCl
two types of mucous cells
neck and surface mucous cells
chief cells produce (pepsinogen/HCl)
pepsinogen
two types of cells that secrete lysozyme
serous, Paneth
cell that secrete secretory component
absorptive cells
plasma cells in Peyer’s patches secrete (IgA/gastrin)
IgA
parietal cells secrete (gastrin/intrinsic factor)
intrinsic factor
enteroendocrine cells secrete (gastrin/intrinsic factor)
gastrin
what cell produces bile and plasma proteins
hepatocyte
what cell type stores Vit A
Ito cell in perisinusoidal space
what cells border the bile canaliculi
adjacent hepatocytes
which hepatocyte organelle is involved in drug detox
SER
dual blood supply of liver first gets mixed in:
hepatic sinusoids
bilirubin glucuronide gives feces their:
color
what three things does the concept of a liver acinus explain
blood perfusion, metabolic activity, liver pathology
what layers does the gallbladder have
mucosa, muscularis, adventitia/serosa
three major cell types that border the perisinusoidal space
Ito, hepatocytes, blood cells
two functions of gall bladder
store and concentrate bile
____ cells: from monocytes, destroy aged RBCs, digest Hb, destroy bacteria, 15% of liver cells, ID in rat stained with trypan blue
Kupffer cells
