To form an effective barrier that protects underlying tissues, the epithelial ce

Question

To form an effective barrier that protects underlying tissues, the epithelial cells of the skin must with specialized cell junctions known as desmosomes membranes of epithelial cells, forming the different strata of the epidermis. Hemidesmosomes membrane. s hold onto one another and also be connected to the rest of the body. They do this as desmosomes and hemidesmosomes (as you saw in Chapter 4: The Tissue Level of Organization). Desmosomes lock together the plasm fimly attach the deepest cels of the stratum basale to the extracellular basement What kind of specialized cell junction permits the free diffusion of ions and small molecules between two olls? O gap junction O tight junctions O microvi O cilia

Explanation / Answer

Answer : Gap junctions

Gap junctions allow ions and small molecules between two cells while tight junctions seal two adjacent cells.

Microvilli is a small hair like projections found in small intestine which helps in absorption of nutrients.

Cilia is also a small hair like structure which lines the air passages to eliminate or flush out the foreign particles which enter the body through nostrils

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