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Section of stratified epithelium. Labels: c, lowermost columnar cells; P, polygonal cells above these; fl, flattened cells near the surface. Between the cells are seen intercellular channels, bridged over by processes which pass from cell to cell.

Epithelium Cells

Section of stratified epithelium. Labels: c, lowermost columnar cells; P, polygonal cells above these;…

Simple pavement epithelium. Labels: a, from a serious membrane; b, from a blood vessel. "In simple pavement epithelium, the cells form flat, many-sided plates or scales, which fit together like tiles of a mosaic pavement. It forms very smooth surfaces, and it lines the alveoli of the lungs, the heart, blood vessels, land lymphatics; the mammary ducts, the serous cavities, etc."—Kimber, 1907.

Simple Pavement Epithelium Cells

Simple pavement epithelium. Labels: a, from a serious membrane; b, from a blood vessel. "In simple pavement…

Simple columnar epithelium. Labels: a, the cells; b, intercellular substance between the lower end of cells. "The columnar epithelium is a variety of simple epithelium in which the cells have a prismatic shape, and are set upright on the surface which they cover. It is found in its most characteristic form lining the mucous membrane of the intestinal canal."—Kimber, 1907

Simple Columnar Epithelium

Simple columnar epithelium. Labels: a, the cells; b, intercellular substance between the lower end of…

Glandular epithelium with the cells set round a simple saccular gland, highly magnified. "Glandular epithelium is found in the recesses of secreting glands. The cells are of many different shapes, and are usually set round a tubular or saccular cavity, into which the secretion is poured." —Kimber, 1907

Glandular Epithelium Cells

Glandular epithelium with the cells set round a simple saccular gland, highly magnified. "Glandular…

Ciliated epithelium from the human trachea, highly magnified. Labels: a, large ciliated cell; d, cell, with two nuclei. "In ciliated epithelium the cells, which are generally columnar in shape, bear at their free extremities little hair-like processes which are agitated incessantly with a lashing or vibrating motion. These minute and delicate processes are named cilia, and may be regarded as active prolongations of the cell-protoplasm." —Kimber, 1907

Ciliated Epithelium Cells

Ciliated epithelium from the human trachea, highly magnified. Labels: a, large ciliated cell; d, cell,…

Section of the transitional epithelium lining the bladder, highly magnified. Labels: a, superficial; b, intermediate; c, deep layer of cells.

Epithelium Cells Lining the Bladder

Section of the transitional epithelium lining the bladder, highly magnified. Labels: a, superficial;…

Flat epithelium cells from the surface of the peritoneum. Labels: a, cell body; c, nucleus.

Flat Epithelium Cells

Flat epithelium cells from the surface of the peritoneum. Labels: a, cell body; c, nucleus.