Histology Flashcards
adipose tissue/fat
tissue where adipocytes are dominant cell type
nervous tissue
specialized for communication by means of electrical/chemical signals
muscular tissue
specialized two contract when stimulated, to exert a physical force on other tissues, organs or fluids
cellular junctions
connections between one cell and another
-enables cells to resist stress, communicate and control movements of substances through tissues
tight junction
completely encircles an epithelial cell near its apical surface and joins it tightly to neighboring cells
desmosome
patch that holds cells together like the snap on a pair of jeans
Gap junction
formed by connexion: 6 transmembrane proteins arranged in a ring surrounding a water filled channel
gland
cell.organ that secretes substances for use elsewhere in body or for elimination of waste
secretion
useful in body
-enzyme or hormone
excretion
waste product
exocrine
maintain with surface by way of a duct
endocrine
lose contact with surface and have no ducts
-secrete directly into blood, hormones
simple exocrine
one single unbranched duct
compound exocrine
branched duct
tubular
duct and secretory portion are of uniform diameter
anicar
secretory cells form a dilated sac
acinus/alveolus
sac produced in a acinar gland
tubulaciner gland
gland with secretory cells in both tubular and acinar portions
serous glands
produce thin water fluids
mucous gland
secrete glycoprotein called mucin, absorbs water and form mucus
mixed glands
contain serous and mucous cells
ecerine
type of exocrine glands that release products by means of exocytosis
holocrine
type of exocrine gland where cells accumulate a product and then entire cell disintegrates becoming the secretion
membranes
can be composed of epithelial or connective only or epithelial, connective and muscular together
