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NEET2004ZoologyStructural Organisation in AnimalsActual

The epithelial lining in the alveoli of the frogs facing lung cavity is

Options

  1. Asquamous ciliated
  2. Bcolumnar ciliated
  3. Ccolumnar nonciliated
  4. Dsquamous nonciliated

Correct answer

B. columnar ciliated

Step-by-step solution

Alveoli is highly vascularised with an internal lining of very thin squamous epithelium, which always remain moist by mucus. The epithelial cells at the linar most margins of septa facing lung cavity are columnar and ciliated.

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