A 4-year-old boy has recently returned from a holiday abroad and has now arrived now at the Clinic of Infectious Diseases with his parents due to severe
dehydration caused by diarrhoea. The causative bacterium is Salmonella ,
which disrupts the structure of one type of intercellular junctions – tight
junction = zonula occludens. This physiologically prevents the passage of fluid
between cells – the so-called paracellular route. Disruption of these tight
junctions results in fluid loss into the lumen of the gastrointestinal tract.
Where can we find these tight junctions on cells?

Question

A 4-year-old boy has recently returned from a holiday abroad and has now arrived now at the Clinic of Infectious Diseases with his parents due to severe
dehydration caused by diarrhoea. The causative bacterium is  Salmonella ,
which disrupts the structure of one type of intercellular junctions – tight
junction = zonula occludens. This physiologically prevents the passage of fluid
between cells – the so-called paracellular route. Disruption of these tight
junctions results in fluid loss into the lumen of the gastrointestinal tract.
Where can we find these tight junctions on cells?

Answer

on the lateral side closest
to the basal surface

Answer

on the lateral side closest to the apical surface

Answer

on the apical site of the cell

Answer

on the basal site of the cell

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A 4-year-old boy has recently returned from a holiday abroad and has now arrived...

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