What type of membrane junction would you expect to be most plentiful in the bladder? Why?
What type of membrane junction would you expect to be most plentiful in the bladder? Why?
Homework Answers
Since the urinary bladder changes size as a result of repetitive
filling and emptying,one would expect it to be lining by a
transitional epithelium.Transitional epithelia can withstand
stretching much better than other types of epithelia.Tight
junctions consist of weblike strands of transmembrane proteins that
fuse the outer surfaces of adjacent plasma membranes together to
seal off passageways between adjacent cells.Cells of epithelial
tissues that line the stomach, intestines,and urinary bladder have
many tight junctions to retard the passage of substances between
cells and prevent the contents of these organs from leaking into
the blood or surrounding tissues.
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What type of membrane junction would you expect to be most
plentiful in the bladder? Why?
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