Question

Which of the following statements is correct about the type of junction and their role in our body?

• A. Adhering junctions facilitate the cells to communicate with each other
• B. Tight junctions help to stop substances from leaking across a tissue
• C. Tight junctions help to perform cementing to keep neighbouring cells together
• D. Gap junctions help to create gap between the cells and tissues.

Answer 1

Answer: (B)

Tight junctions help to stop substances from leaking across a tissue

Answer 2

Tight junctions : Create a seal between adjacent cells, preventing the leakage of substances across the tissue. They prevent the passage of molecules between cells.

Adhering junctions : Provide strong mechanical attachments between adjacent cells, acting like “spot welds.” They don’t facilitate communication.

Gap junctions : Form channels between adjacent cells, allowing for the passage of ions, small molecules, and signals. They facilitate communication, not create gaps.