Which of the Following Statements Concerning Gap Junctions Is NOT

question 190

Multiple Choice

Which of the following statements concerning gap junctions is NOT correct?

• A)Gap junctions are communicating junctions.
• B)At a gap junction, filaments of unknown composition extend between the plasma membranes of two closely adjacent but not touching cells, acting as "spot rivets" to anchor the cells together.
• C) Gap junctions are formed by small connecting tunnels that link two adjacent cells and permit exchange of small water-soluble particles between the cells.
• D) Gap junctions play an important role in transmission of electrical activity throughout an entire muscle mass.

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