top of page

COLUMNAR EPITHELIUM

  • The height of the cells is more than the length or the breadth.

  • The cells appear column like in shape.


SIMPLE COLUMNAR EPITHELIUM
  • Made up of single layer of cells.

  • The cells are elongated column-like.

  • Epithelial lining containing Columnar epithelium is generally secretory or glandular.

  • Examples

    • Lining of Gall bladder.

    • Lining of stomach and intestines.

    • Lining of Acini of Pancreas.

    • Stratum germinativum of Skin.


CILIATED COLUMNAR EPITHELIUM
  • Bears cilia on the apical surface of the cell

  • Cilia beats in a synchronised manner with adjacent cells

  • Helps in movement of substances over the surface of epithelium

BRUSH BORDERED COLUMNAR EPITHELIUM
  • Small cytoplasmic projections called Microvilli are present.

  • Microvilli increases the surface area for secretion and absorption




PSEUDOSTRATIFIED COLUMNAR EPITHELIUM
  • Made up of single layer of cells but appears double layered.

  • Length of the cells and position of nucleus is different giving it a double layered appearance.

  • Consist of both ciliated and non-ciliated cells.

  • Non-ciliated cells secrete mucus while the ciliated cells helps in moving the mucus.

  • Example

  • Epithelium of Trachea and Bronchi



STRATIFIED COLUMNAR EPITHELIUM
  • Made up of multiple layer of cells.

  • Only the top layer of cells are Columnar in shape.

  • Columnar epithelium is generally present in Embryonic tissue and poorly developed in adults.

11 views0 comments

Recent Posts

See All

Comments


AD SPACE

bottom of page