Biology (NTSE/Olympiad)  

2. Tissue

Columnar epithelium

Columnar epithelium
This epithelium consists of tall or pillar-like cells that are much taller than wide. The nuclei are generally elongated along the long axis of cells.
Occurrence. The columnar epithelium lines the stomach, intestine and gall bladder. It also lines mammary gland ducts and parts of urethra.

Function. It helps in protection, absorption and secretion. Columnar epithelium of intestine is specialized for the absorption of water and digested food.

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