Epithelial Tissue Characteristics
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Questions and Answers

What is the primary function of the basement membrane in epithelial cells?

  • To provide a site of attachment for the epithelium
  • To regulate cell-cell junctions
  • To act as a selective filtration barrier (correct)
  • To facilitate cell renewal

Which of the following is NOT a characteristic of epithelial cells?

  • They have a direct blood supply (correct)
  • They have a basement membrane
  • They have specialized cell-cell junctions
  • They have a high rate of cell renewal

What is the primary function of the lamina propria in epithelial cells?

  • To regulate the selective filtration barrier
  • To facilitate cell-cell junctions
  • To provide support to the overlying epithelium (correct)
  • To provide a site of innervation for the epithelial cells

Which of the following proteins is NOT a component of the basal lamina?

<p>Keratin (C)</p> Signup and view all the answers

What is the significance of the basal lamina in the diagnosis of malignant epithelial tumors?

<p>It allows for the diagnosis of malignant epithelial tumors by their ability to break through the basement membrane (A)</p> Signup and view all the answers

What is the primary mechanism of nutrition for epithelial cells?

<p>Diffusion from adjacent connective tissue (A)</p> Signup and view all the answers

What is the characteristic of the apical pole of epithelial cells?

<p>May contain enzymes such as disaccharidases and peptidases (C)</p> Signup and view all the answers

What is the primary means of nutrient delivery to epithelial tissues?

<p>Diffusion of metabolites through the basal lamina (A)</p> Signup and view all the answers

What is the process by which epithelial cells are renewed continuously?

<p>Mitosis (B)</p> Signup and view all the answers

What is the term for the transformation of one type of adult epithelial tissue into another adult type?

<p>Metaplasia (B)</p> Signup and view all the answers

What is the characteristic of the basal surface of epithelial cells?

<p>Receptors for chemical messengers (C)</p> Signup and view all the answers

What is the term for the differential and stable organization of cell organelles and membrane proteins in epithelial cells?

<p>Polarity (D)</p> Signup and view all the answers

What is the primary function of sensory nerve endings in epithelial tissues?

<p>Reception of sensory information (D)</p> Signup and view all the answers

What is the characteristic of the lateral surface of epithelial cells?

<p>No specific characteristic (D)</p> Signup and view all the answers

What is the term for the process by which epithelial cells receive nutrients?

<p>Nutrition (C)</p> Signup and view all the answers

What is the characteristic of the organization of epithelial cells in endocrine glands?

<p>Form anastomosing cords interspersed between dilated blood capillaries (C)</p> Signup and view all the answers

What is the characteristic of the basal region of serous cells?

<p>It has intense basophilia (B)</p> Signup and view all the answers

What is the function of myoepithelial cells in exocrine glands?

<p>To contract around the secretory portion of the gland (A)</p> Signup and view all the answers

What is the characteristic of the apical pole of goblet cells?

<p>It contains numerous large, lightly staining granules (B)</p> Signup and view all the answers

What is the term for the ability of certain cells to take up amine precursors and exhibit amino acid decarboxylase activity?

<p>APUD (A)</p> Signup and view all the answers

What is the term for the system of endocrine cells interspersed among non-endocrine cells?

<p>DNES (B)</p> Signup and view all the answers

What is the characteristic of the secretory granules in neuroendocrine cells?

<p>They are found in the basal region of the cell (C)</p> Signup and view all the answers

What is the function of paracrine cells?

<p>To regulate the function of neighboring cells (B)</p> Signup and view all the answers

What is the characteristic of the nucleus in mucus-secreting cells?

<p>It is located in the cell base (B)</p> Signup and view all the answers

What is the term for the process by which secretory granules are released from the cell?

<p>Exocytosis (C)</p> Signup and view all the answers

What is the characteristic of the cytoplasm in myoepithelial cells?

<p>It contains numerous actin and myosin filaments (A)</p> Signup and view all the answers

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