Epithelial cells Flashcards
Epithelial cell cancer?
Carcinoma.
Neural cell cancer?
Neuroblastoma.
Glial cell cancer?
Glioma
Epithelial tissue architecture?
Organised, continuous and cohesive layers of cells.
What is the classification of epithelial cells shape?
Squamous (flattened) , cuboidal and columnar.
What is the classification of epithelial cells layering?
Simple (single layer) and stratified (multi-layer).
Where may you find simple squamous epithelium?
Lung alveolar. Thin allows short diffusion path.
Where may you find simple cuboidal epithelium?
Ducts such as kidney ducts.
Where may you find simple columnar epithelium?
Found in surfaces involved in absorption and secretion such as enterocytes.
What are the two types of stratified squamous epithelium? Can you explain the two types.
Keratinising and non keratinising. Keratinising produce keratin and die but become strong protective structures. Non keratinising don’t die and so retain nuclei and organelles.
What is pseudostratified epithelium?
Epithelial cells which seem to be arranged in layers but have surface cells that are attached to basal lamina.
What is apical domain?
The domain of the epithelial cell that faces the lumen or environment.
What is basolateral domain?
The domain of epithelial cell that mediates attachment to underlying tissue. Faces ECM
In transporting epithelium how is the basal membrane adapted?
Membrane infolds result in greater surface area to pump molecules across basal membrane. Mitochondria for active transport.
What kind of transport occurs at apical domain?
Passive transport with ion channels while on basolateral domain active transport occurs. This ensures directionality.
