GLANDS
GLANDS
based on number of cells
unicellular
multicellular
based on presence of duct
exocrine
number of branches of duct
simple
crypts of leiburkuhn
sweat glands
fundic glands of stomach
mucous glands of urethra
meibomian glands
compound
Brunner's glands
mammary glands
submandibular glands
shape of secretory unit
tubular
coiled
sweat glands ( coiled tubular)
Intestinal glands
gastric glands
acinar
exocrine pancreas
salivary glands
alveolar
nature of secretory product
serous
serous acini
lined by pyramidal shaped simple columnar epithelium
rounded basal nucleus
Rough endoplasmic reticulum
basal basophilia
golgi complex well developed
apical eosinophilia
lumen
smaller than mucous acini
examples
parotid gland , lacrimal gland , von ebner's gland in tongue
mucous
mucous acini
lined by pyramidal shaped simple columnar epithelium
flat elongated basal placed nucleus
empty cytoplasm on H&E staining
mucus stored in form of mucinogen granules
lost during preparation of tissue specimen
lumen
wider
staining
positive with periodic-acid-schiff staining
dark magenta stain
mixed
mucous acini with serous demilunes
endocrine
based on manner of secretion
merocrine
vesicles
apocrine
through apical part
holocrine
whole cell disintegrates and secretes
signaling
paracrine signaling
autocrine signaling