Answer :

Final answer:

Epithelial tissues have several special characteristics that distinguish them from other tissue types. These include being highly cellular, having cell junctions, exhibiting polarity, being attached to a basal lamina and basement membrane, and having specific functions depending on their location.

Explanation:

Epithelial tissues have several special characteristics that distinguish them from other tissue types:

  1. Highly cellular: Epithelial tissues are made up of closely packed cells with little or no extracellular material between them.
  2. Cell junctions: Adjoining cells in epithelial tissues form specialized intercellular connections called cell junctions, which help maintain tissue integrity.
  3. Polarity: Epithelial cells exhibit polarity, with differences in structure and function between their apical facing surface (exposed to the external environment) and basal surface (close to underlying body structures).
  4. Basal lamina: Epithelial tissues are attached to a basal lamina, which is a mixture of glycoproteins and collagen. It separates the epithelium from underlying connective tissue.
  5. Basement membrane: The basal lamina attaches to a reticular lamina secreted by underlying connective tissue, forming a basement membrane that helps hold the epithelium together.
  6. Specific functions: Epithelial tissues have specific functions depending on their location, such as protection, absorption, secretion, and filtration.

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Rewritten by : Barada