Match the type of cell junction with the best description.Answers may be used once,more than once,or not at all
-contributes to the blood-brain barrier
A)gap junction
B)tight junction
C)anchoring junction

Question

Quizplus · Accepted Answer

Tight junctions form a seal between cells, preventing the movement of molecules between them. In the case of the blood-brain barrier, tight junctions between the cells of the brain's blood vessels prevent many substances from passing from the blood into the brain tissue.

Answer: C
 Anchoring junctions (also called desmosomes) provide mechanical strength to tissues by anchoring cells together. In tissues that experience mechanical stress, such as skin, desmosomes are particularly important.

Answer: A
 Gap junctions allow for communication between cells by creating channels that allow ions and small molecules to pass from one cell to another. In some tissues, such as heart muscle, gap junctions coordinate the contraction of the cells. However, they do not play a role in the blood-brain barrier.

Match the Type of Cell Junction with the Best Description