group of specialized cells and the extracellular substances surrounding them
tissues
microscopic study of tissue structure
histology
4 basic tissue type
epithelial tissues
classifications of epithelial tissues based on number of cell layers
classifications of epithelial tissues based on idealized shapes of the epithelial cells
stratified cuboidal epithelium
stratified columnar epithelium
free cell surfaces
cell connections
desmosomes
cells to basement membrane
hemidesmosomes
tight junctions
help tight junctions
adhesion belts
for intercellular communication
gap junctions
glands
types of glands
ductless gland that produces chemicals
endocrine gland
produce variety of products such as saliva, sweat, digestive tract secretions
exocrine glands
classifications of exocrine glands acc to structure of ducts
classification of exocrine glands acc to secretory region
classifications of exocrine glands acc to how products leave the cell
release by exocytosis
merocrine gland
release as pinched-off fragments
apocrine gland