What type of alveolar cells cover over 90% of the surface area of the alveolar-capillary membrane?

Name: What type of alveolar cells cover over 90% of the surface area of the alveolar-capillary membrane?
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The alveolar septa are covered with extremely flat squamous epithelia called type I pneumocytes. While they represent only about 8% of all the cells found in the alveolar region, the type I cells cover approximately 93% of the alveolar surface.

What Type of Alveolar Cells Cover Over 90% of the Surface