chapter 1: epithelial glands Flashcards
method of secretion by which the product is released into a duct or directly onto an epithelial surface
exocrine secretion
- components directly involved with the primary function
- muscle cells
parenchyma
- components providing mechanical/metabolic support
- blood vessels, nerves, lymphatics, CT
stroma
3 methods of sub classifying exocrine secretion
morphology
method of secretion
product secreted
method classifies gland according to shape of secretory units and duct arrangement
morphology
-tubular vs. acinar (alveolar)
-unbranched vs. branched
examples of which classification:
morphology
- MC method of secretion
- secretion by exocytosis
merocrine
goblet cells, salivary glands, pancreas, all sweat glands in kids, many adult sweat glands secreted through
merocrine
- secretion in which:cell matures and DIES
- product= entire cell with intact vacuoles
- associated with odor
holocrine
-sebaceous glands
-tarsal glands of eyelids
secreted by:
holocrine
- cell damage is minimal
- secretory product= some cytoplasm, membranes and intact vacuoles
- associated with ODOR
aporcrine
lactating mammary glands, some adult sweat glands, ceruminous glands in external auditory canal, ciliary glands in eyelid
apocrine
smallest division of a gland
acinus
small group of serous cells attached to mucus acinus
serous demilune
contractile cells with epithelial origin; cells wrap around the acini and sometimes the ducts in some exocrine glands
myoepithelial cells
