INTRODUCTION TO MICROSCOPY CELL BIOLOGY
CELL JUNCTIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Urine is confined to the human bladder in part due to the structure of junctions that connect the cells lining the bladder. These junctions form a barrier that prevents the exchange of ions and solutes between the blood and urine. What is the likely identity of these junctions?
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Gap junctions
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Tight junctions
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Desmosomes
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Plasmodesmata
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Explanation:
Detailed explanation-1: -Explanation: Tight junctions commonly line organs such as the urinary bladder, as they prevent unwanted fluid from leaking into or out of these organs. They are most notable for their barrier function: they are almost completely impermeable to fluid.
Detailed explanation-2: -Tight junctions: Transmembrane proteins called claudins join the plasma membranes of two cells to create a barrier that limits diffusion of ions and solutes between the cells and molecules between apical and basolateral domains of the plasma membrane.
Detailed explanation-3: -Which of these cell junctions form a barrier to the passage of materials? Tight junctions form a barrier that prevents fluids from moving between cells.
There is 1 question to complete.