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Question 1

Epithelial cells serve as a barrier to prevent non-specific movement of chemicals from one side of the epithelium to the other side

Answer 1

TRUE

Question 2

Adhering junctions are based on two different types of cytoskeleton filament systems. Name those systems.

Answer 2

ACTIN AND INTERMEDIATE

Question 3

The molecular seal that serves as the barrier is called a _____________ _____________. While this is a good barrier, such barriers are not very strong and must be underlined by _____________ _____________.

Answer 3

TIGHT JUNCTIONS, ADHERING JUNCTIONS