K4 HS Digestive System Glands
K4 HS Digestive System Glands
K4 HS Digestive System Glands
Glands
Department of Histology
Medical Faculty USU
2013
Glands
Salivary Glands
Liver
Gall Bladder
Pancreas
Salivary Glands
Secretory Portions
Serous cells
Mucous cells
Mucous Cell
Serous Cell
Duct Portions
Salivon
Sublingual glands
Sublingual Glands
Submandibular Glands
Submandibular glands
Parotid Glands
Parotid Glands
Liver
be approximated
Longitudinal axis is occupied by central vein
Portal areas (triads): where 3 classical lobules are in
contact each other
CT elements are increased; hepatic artery, portal vein;
interlobular bile ducts; lymph vessels
Classic Lobules
Portal lobules
acinus
Triangular region whose center is the portal area and
whose periphery is bounded by imaginary straight line
connecting the three surrounding central veins that
form the three apices of the triangle
fenestra
sinusoid
Ito Cell
Space of Disse
Kupfer Cells
Hepatic Duct
Canals of Hering
ovoid cells
Hepatocytes
canaliculi
Short, blunt microvili project into bile canaliculi
(exocrine secretion)
High levels of Na-K ATPase and adenylate cyclase
Isolated gap junctions
Sinusoidal domains
Bile Canaliculi
Gall Bladder
Mucosa
Histophysiology
Pancreas
Exocrine Pancreas
Tubuloacinar gland
40 50 acinal cells form a round to oval acinus
3 4 centroaciner cells occupied acinar lumen beginning of the
duct system
Acinar cell
Exocrine Pancreas
Duct System
Centroacinar cells of terminus
intercalated duct intralobular ducts
interlobular ducts main pancreatic
duct common bile duct papilla of
Vater
Centroacinar cells: pale, simple low
cuboidal ep
Endocrine Pancreas
Islet of Langerhans
Richly vascularized spherical conglomeration of
+ 300 cells
Cells: , , , PP, G
Cannot be differentiated by routine examination
IHC, EM
Thank You
See you in mid-term exam