Two neighboring epithelial cells in the gingival epithelium are attached to one another by which type of cell junction?单项选择题
A
Desmosome
B
Unidesmosome
C
Hemidesmosome
D
Polymosome

Question

Two neighboring epithelial cells in the gingival epithelium are attached to one another by which type of cell junction?

BlackTom AI · Accepted Answer

Consider the type of junction that physically binds neighboring epithelial cells together in gingival epithelium.
Option 1: Desmosome. This is the correct choice. Desmosomes are adhesive intercellular junctions that link adjacent epithelial cells by cadherin proteins (desmoglein and desmocollin) and connect to intermediate filaments inside the cells, providing strong mechanical strength to epithelia.
Option 2: Unidesmosome. This term is not standard in cell-junction taxonomy and does not correctly describe a known cell–cell junction in gingival epithelium, so it is inaccurate.
Option 3: Hemidesmosome. Hemidesmosomes anchor epithelial cells to the underlying basement membrane rather than to neighboring cells. They connect integrins to the basement membrane, not to another cell, so this option misidentifies the intercellular connection.
Option 4: Polymosome. This is not a recognized or valid type of cell junction in histology; it does not describe any known mechanism for cell–cell adhesion, making it incorrect.
In summary, the junction responsible for attaching neighboring epithelial cells to each other is the desmosome, while the other options either describe different structures or are not recognized as valid junction types.

Two neighboring epithelial cells in the gingival epithelium are attached to one another by which type of cell junction?单项选择题

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