Squamous (flat) Cuboidal (cube like) Columnar (tall and rod-like) Types of Epithelial Cells Simple squamous epithelium single layer, flat cells. Gases and other substances can diffuse across – this layer to basal membrane. Liquids easily flow over them. Line body cavities and capillaries to reduce friction. Location Blood vessels Respiratory system Function reduces friction – Simple cuboidal epithelium single layer of cube like cells. – Location Renal (urinary) system Kidney in female Testicle in male Function Secretion of mucus Absorption of fluid Simple columnar epithelium– one or more layers and cells look like columns. Cells elongated and nuclei elongated and usually close to base of cell. Location in GI tract such as lining of intestine and stomach – Function Secretes mucus in GI tract which keeps surface smooth. Some specialized for sensory reception such as in nose, ears, and taste buds of tongue. Goblet found between the columnar epithelial cells of the duodenum(stomach). – Pseudostratified columnar epithelium Location Large glands contain these types of cells Ciliated variety line trachea and upper respiratory tract Function secretion of mucus – Stratified cuboidal epithelium multilayered, cube-like cells that protect ducts of sweat glands and – male urethra. Location Male urethra Sweat glands Function Protection
Squamous (flat) Cuboidal (cube like) Columnar (tall and rod-like) Types of Epithelial Cells Simple squamous epithelium – single layer, flat cells. Gases and other substances can diffuse across this layer to basal membrane. Liquids easily flow over them. Line body cavities and capillaries to reduce friction. Location Blood vessels Respiratory system Function – reduces friction Simple cuboidal epithelium – single layer of cube like cells. Location Renal (urinary) system Kidney in female Testicle in male Function Secretion of mucus Absorption of fluid Simple columnar epithelium– one or more layers and cells look like columns. Cells elongated and nuclei elongated and usually close to base of cell. Location – in GI tract such as lining of intestine and stomach Function Secretes mucus in GI tract which keeps surface smooth. Some specialized for sensory reception such as in nose, ears, and taste buds of tongue. Goblet – found between the columnar epithelial cells of the duodenum(stomach). Pseudostratified columnar epithelium Location Large glands contain these types of cells Ciliated variety line trachea and upper respiratory tract Function – secretion of mucus Stratified cuboidal epithelium – multilayered, cube-like cells that protect ducts of sweat glands and male urethra. Location Male urethra Sweat glands Function Protection
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