No not all cells touch the basement membrane. Pseudostratified epithelium is composed of cells that touch the basement membrane.
basement membrane
The membranes that do not contain gland cells are called basement membranes. These basement membranes line the interiors of blood vessels and the skin.
Transitional Epithelium
The respiratory membrane consists of the epithelial cells of the alveolus, the endothelial cells of the capillary, and the two fused basement membranes of these layers.Gas exchange occurs across this respiratory membrane.
The basement membrane is what epithelial cells lie on top of. They separations of apposing layers. They have functions, to have compartmentalization They basically have influences in cell proliferation, adheasion, migration, differentiation. Reservoir for growth factors, enzymes and plasma proteins.
basement membrane
Squamous cell carcinoma
transitional
it is thin because it is a poo and it has sex with people!!!
They stretch
stratified cuboidal
The term "basal lamina" is usually used with electron microscopy, while the term "basement membrane" is usually used with light microscopy. The structure known as the basement membrane in light microscopy refers to the stained structure anchoring an epithelial layer. This encompasses the basal lamina secreted by epithelial cells and typically a reticular lamina secreted by other cells.
stratified squamous and transitional epithelium
The membranes that do not contain gland cells are called basement membranes. These basement membranes line the interiors of blood vessels and the skin.
Transitional Epithelium
simple tissue has only one layer of cells stratified has 2 to 20 or layers of cells the deepest layer attached to the basement membrane
alveolar and capillary walls and their fused basement membranes