2-L1
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Questions and Answers

What is the main function of basement membranes in epithelial tissues?

  • Secreting mucus for protection
  • Providing structural support and polarity to epithelial cells (correct)
  • Regulating cell migration along epithelia
  • Transporting substances from the epithelium to the connective tissue

Which type of epithelium is responsible for protecting underlying tissue from wear?

  • Stratified epithelium (correct)
  • Pseudostratified epithelium
  • Columnar epithelium
  • Simple squamous epithelium

Why is pseudostratified epithelium called pseudostratified?

  • Because it secretes mucus for protection
  • Because only some cells reach the surface, giving the appearance of multiple layers (correct)
  • Because it has multiple layers of cells
  • Because it is found in multiple locations in the body

What is the role of cilia in simple columnar epithelium?

<p>To help move substances along the surface (C)</p> Signup and view all the answers

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

<p>Helping organize proteins in the plasma membrane of epithelial cells (C)</p> Signup and view all the answers

Which type of epithelial tissue allows for diffusion, filtration, secretion, and absorption to occur?

<p>Simple squamous epithelium (A)</p> Signup and view all the answers

What role do basal lamina components play in epithelial tissues?

<p>Mediating cell-to-cell interactions and marking routes for cell migrations (C)</p> Signup and view all the answers

What is the main feature of epithelial tissue in terms of cell arrangement?

<p>Closely packed cells with little extracellular material (D)</p> Signup and view all the answers

Where is the apical surface of epithelial cells typically located?

<p>Facing the body cavity or lining of internal organs (A)</p> Signup and view all the answers

How do epithelia adhere to nearby connective tissue?

<p>Via a basement membrane (D)</p> Signup and view all the answers

Why do epithelia have a high capacity for renewal?

<p>Since they are subjected to wear and tear (D)</p> Signup and view all the answers

What type of tissue do most epithelia rest on?

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

How is the area of contact between epithelium and connective tissue increased?

<p>Via irregularities at the interface known as papillae (D)</p> Signup and view all the answers

What is the role of the basement membrane in epithelial tissues?

<p>To attach epithelium firmly to nearby connective tissue (B)</p> Signup and view all the answers

Where are ciliated rectangular cells typically found?

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

What is the main function of ciliated rectangular cells?

<p>Aids in movement (C)</p> Signup and view all the answers

Which type of epithelial tissue is capable of renewal at a high rate?

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

What is the main function of epithelial cells with a flattened disk-shaped nucleus?

<p>Aid in diffusion (A)</p> Signup and view all the answers

What distinguishes pseudostratified epithelia from other epithelial tissues?

<p>Presence of multiple layers (A)</p> Signup and view all the answers

What feature do ependymal cells in the brain ventricle and spinal cord have?

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

Which structure is electron-dense, 20-100 nm thick, and consists of a network of fine fibrils?

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

Where is the reticular lamina located in relation to the basal lamina?

<p>Beneath the basal lamina (A)</p> Signup and view all the answers

Which organ does not typically contain ciliated rectangular cells?

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

Which type of epithelium has cells that are cubelike in shape?

<p>Simple cuboidal epithelium (A)</p> Signup and view all the answers

What differentiates simple columnar epithelium from pseudostratified epithelia?

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

What type of epithelium has cells with about the same height and width and a spherical nucleus?

<p>Ciliated simple columnar epithelium (D)</p> Signup and view all the answers

Which structure binds the basal surface of epithelial cells to the basal lamina?

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

In which location can you find mesothelium in the body?

<p>Lining of body cavities (A)</p> Signup and view all the answers

What is the term used to describe an increase in the rate of cell division?

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

In compensatory reactions, if one kidney is removed, what happens to the other kidney?

<p>It increases in size (B)</p> Signup and view all the answers

What happens to the number of filtration units during aging hyperplasia?

<p>It remains the same (C)</p> Signup and view all the answers

Which type of epithelium is characterized by a single layer of nonciliated rectangular cells?

<p>Non-ciliated simple columnar epithelium (B)</p> Signup and view all the answers

Where is non-ciliated simple columnar epithelium found in the body?

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

What function does non-ciliated simple columnar epithelium perform?

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

Which organ(s) belong to the male reproductive tract and contain non-ciliated simple columnar epithelium?

<p>Seminal vesicles and Epididymis (D)</p> Signup and view all the answers

What characteristic enables abnormal growth (cancer) cells to detach easily from a tumor and spread to other parts of the body?

<p>Altered adhesive properties (B)</p> Signup and view all the answers

What term describes the process where cancer cells spread to other parts of the body?

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

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