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Epithelial Tissue

Human Anatomy - Epithelial Tissue > Structure

QuestionAnswer
simple squamous epithelium single layer of thin, flat cells resembling floor tiles; the single nucleus of each cell bulges at its center
simple cuboidal epithelium single layer of cells about as tall as they are wide; spherical, centrally located nucleus
nonciliated simple columnar epithelium single layer of tall, narrow cells; oval-shaped nucleus in basal region of cell; nucleus oriented lengthwise in cell; apical regions of cells have microvilli; may contain goblet cells that secret mucin
ciliated simple columnar epithelium single layer of tall, column-shaped, ciliated cells; oval-shaped nucleus oriented lengthwise in the basal region of the cell; goblet cells may be present
nonkeratinized stratified squamous epithelium thick covering of several cell layers; basal cells typically are cuboidal, while superficial cells become squamous as they move toward surface; apical surface cells are alive and kept moist
keratinized stratified squamous epithelium multiple cell layers; basal cells typically are pohyhedrial while superficial cells become squamous as they move toward surface; more superficial cells are dead and filled with keratin
stratified cuboidal epithelium two or more layers of cells; cells at apical surface are cuboidal
stratified columnar epithelium two or more layers of cells; cells at apical surface are columnar
pseudostratified ciliated columnar epithelium single layer of cells with varying heights that appears multilayered; all cells connect to basement membrane but not all cells reach apical surface; has goblet cells and cilia
pseudostratified nonciliated columnar epithelium single layer of cells with varying heights that appears multilayered; all cells connect to basement membrane but not all cells reach apical surface; lacks goblet cells and cilia
transitional epithelium epithelial appearance varies, depending on whether tissue is stretched of relaxed; shape of cells at apical surface changes; some cells may be binucleated
Created by: allerlei