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Questions and Answers
What is the primary function of microvilli in epithelial cells?
What is the primary function of microvilli in epithelial cells?
- To facilitate the movement of substances
- To provide structural support to the cell
- To increase the cell's surface area (correct)
- To regulate cell growth and division
What is the significance of the basement membrane in epithelial tissues?
What is the significance of the basement membrane in epithelial tissues?
- It provides structural support to the epithelial cells
- It facilitates the exchange of substances between the epithelium and connective tissue (correct)
- It prevents the growth of new epithelial cells
- It increases the permeability of the epithelial layer
What is a characteristic feature of epithelial tissues?
What is a characteristic feature of epithelial tissues?
- The presence of blood vessels
- The avasularity of the tissue (correct)
- The ability to regenerate quickly
- The absence of cell junctions
What is the primary role of cell junctions in epithelial tissues?
What is the primary role of cell junctions in epithelial tissues?
What is the term for the layer of connective tissue that underlies the epithelial layer?
What is the term for the layer of connective tissue that underlies the epithelial layer?
What is a key difference between epithelial and connective tissue?
What is a key difference between epithelial and connective tissue?
What type of molecule is Entactin (Nidogen)?
What type of molecule is Entactin (Nidogen)?
What is the function of Occluding junctions?
What is the function of Occluding junctions?
What type of tissue is located under the basal lamina?
What type of tissue is located under the basal lamina?
What is the function of Anchoring or Adhesive junctions?
What is the function of Anchoring or Adhesive junctions?
What is the name of the layer that is visible with electron microscope or light microscope with PAS staining?
What is the name of the layer that is visible with electron microscope or light microscope with PAS staining?
What type of molecule is Perlecan?
What type of molecule is Perlecan?
What type of protein is involved in the attachment of microvilli to the terminal web beneath the cell membrane?
What type of protein is involved in the attachment of microvilli to the terminal web beneath the cell membrane?
What is the primary function of the lamina propria in epithelial tissues?
What is the primary function of the lamina propria in epithelial tissues?
What is the main characteristic of epithelial tissues in terms of regeneration?
What is the main characteristic of epithelial tissues in terms of regeneration?
What is the primary function of microvilli in the small intestine and renal tubules?
What is the primary function of microvilli in the small intestine and renal tubules?
What type of junction is characterized by the presence of connexins and allows for the passage of small molecules like cGMP and cAMP?
What type of junction is characterized by the presence of connexins and allows for the passage of small molecules like cGMP and cAMP?
What is the function of the basement membrane in epithelial tissues?
What is the function of the basement membrane in epithelial tissues?
What is the name of the layer of connective tissue that epithelial tissues rest on?
What is the name of the layer of connective tissue that epithelial tissues rest on?
What is the primary function of the apical surface of an epithelial cell?
What is the primary function of the apical surface of an epithelial cell?
What is the characteristic of epithelial tissues in terms of polarity?
What is the characteristic of epithelial tissues in terms of polarity?
What is the term for the thickened glycocalyx on the surface of microvilli?
What is the term for the thickened glycocalyx on the surface of microvilli?
What is the thickness of the basal lamina, as observed with an electron microscope?
What is the thickness of the basal lamina, as observed with an electron microscope?
What type of structure is characterized by a hexameric complex of connexins and has a diameter of 1.5 nm?
What type of structure is characterized by a hexameric complex of connexins and has a diameter of 1.5 nm?
What is the primary function of the basement membrane in epithelial tissues?
What is the primary function of the basement membrane in epithelial tissues?
What is a consequence of the avasularity of epithelial tissues?
What is a consequence of the avasularity of epithelial tissues?
What is the term for the layer of connective tissue that underlies the epithelial layer and is separated from it by the basement membrane?
What is the term for the layer of connective tissue that underlies the epithelial layer and is separated from it by the basement membrane?
What is a characteristic feature of epithelial tissues in terms of cell regeneration?
What is a characteristic feature of epithelial tissues in terms of cell regeneration?
What is the term for the phenomenon where epithelial cells have different structures and functions at their apical and basal surfaces?
What is the term for the phenomenon where epithelial cells have different structures and functions at their apical and basal surfaces?
What is the term for the surface of an epithelial cell that faces the underlying connective tissue?
What is the term for the surface of an epithelial cell that faces the underlying connective tissue?
Which type of junction is responsible for preventing the passage of molecules through the paracellular space?
Which type of junction is responsible for preventing the passage of molecules through the paracellular space?
What is the main protein found in Tight Junctions?
What is the main protein found in Tight Junctions?
What is the function of the glycoprotein in the extracellular matrix of Zonula Adherens?
What is the function of the glycoprotein in the extracellular matrix of Zonula Adherens?
What is the characteristic feature of the interval between cells in Desmosomes?
What is the characteristic feature of the interval between cells in Desmosomes?
What is the location of Hemidesmosomes in the cell?
What is the location of Hemidesmosomes in the cell?
What type of filaments are joined by the proteins in the plaque of Desmosomes?
What type of filaments are joined by the proteins in the plaque of Desmosomes?
What is the shape of Desmosomes?
What is the shape of Desmosomes?
What is the function of the plaque proteins in Hemidesmosomes?
What is the function of the plaque proteins in Hemidesmosomes?
Which type of junction is responsible for cell-cell adhesion?
Which type of junction is responsible for cell-cell adhesion?
What is the location of Zonula Occludens in epithelial cells?
What is the location of Zonula Occludens in epithelial cells?
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