Question

1. Epithelial cells are different from mesenchymal cells in that epithelial cells:

a) have polarity, defined by an apical and basal side (TRUE/FALSE)

b) are tightly adherent to each other (TRUE/FALSE)

c) are loosely adherent to each other (TRUE/FALSE)

d) are usually defined as migratory (TRUE/FALSE)

Answer 1

a) have polarity, defined by an apical and basal side TRUE

Cell polarity refers to four-dimensional differences in shape, structure, and function within a cell.

b). b) are tightly adherent to each other TRUE

Contact between adherent epithelial cells is ensured by different types of intercellular junctions like tight junctions, anchoring junctions, adherent junctions and hemidesmosomes.

c) are loosely adherent to each other FALSE

d) are usually defined as migratory TRUE

Epithelial migration is a process that serves as a self-cleaning and repair mechanism during the development of a multicellular organism. Also seen during cancer cell migration.