Polarity of epithelia Notes: Definitions & Explanations PDF | Download eBooks
Study Polarity of epithelia lecture notes PDF with biology definitions and explanation to study What is Polarity of epithelia?. Study polarity of epithelia explanation with biology terms to review biology course for online degree programs.
Polarity of epithelia Definition:
All epithelia are polarized, meaning that they have two different sides.
Campbell Biology by J.B. Reece, L.A. Urry, M.L. Cain, S.A. Wasserman, P.V. Minorsky, R.B. Jackson
Polarity of epithelia Notes:
The apical surface faces the lumen (cavity) or outside of the organ and is therefore exposed to fluid or air. Specialized projections often cover this surface. For example, the apical surface of the epithelium lining the small intestine is covered with microvilli, projections that increase the surface area available for absorbing nutrients. The opposite side of each epithelium is the basal surface.
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