BIOL 221 - Epithelium Lecture Objectives
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Questions and Answers

What is the basic unit of organization in the body?

  • Cell (correct)
  • Organ
  • Organ system
  • Tissue
  • Which tissue type is responsible for support in the body?

  • Epithelial
  • Nervous
  • Connective (correct)
  • Muscle
  • Where is epithelial tissue found in the body?

  • As a support tissue
  • For location and movement
  • In the brain and nerves
  • As a covering and lining (correct)
  • What are the distinctive characteristics of epithelium?

    <p>Covering and lining</p> Signup and view all the answers

    Why does the mitotic rate in epithelium make it vulnerable to traditional chemotherapy?

    <p>High mitotic rate makes it vulnerable to chemotherapy</p> Signup and view all the answers

    Which type of tissue is responsible for control and sensory functions in the body?

    <p>Nervous</p> Signup and view all the answers

    Which type of epithelial tissue is characterized by cells that are close together and avascular?

    <p>Squamous</p> Signup and view all the answers

    What is the function of simple squamous epithelia?

    <p>Assistance in diffusion, osmosis, and filtration phenomena</p> Signup and view all the answers

    Where are ciliated types of columnar epithelial cells found?

    <p>Respiratory tract bronchioles</p> Signup and view all the answers

    What is the characteristic shape of cuboidal epithelial cells?

    <p>Cube-shaped</p> Signup and view all the answers

    Which type of epithelial tissue has a single layer where all cells touch the basement membrane and the outer surface or the lumen?

    <p>Simple</p> Signup and view all the answers

    Where do most secretory cells of glands and most exocrine gland ducts have cuboidal epithelial cells?

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

    In which type of epithelial tissue are more than one layer present but only the top layer is in contact with the surface?

    <p>Stratified</p> Signup and view all the answers

    What is the main function of simple columnar epithelia with microvilli?

    <p>'Secretory or absorptive functions'</p> Signup and view all the answers

    What is the main function of stratified epithelia?

    <p>Cover exterior body surfaces</p> Signup and view all the answers

    Which type of columnar epithelial cells are found in the small bronchioles of the respiratory tract?

    <p>Ciliated types</p> Signup and view all the answers

    Which type of connective tissue is found in the skin (dermis), bone, tendon, cartilage, and basement membranes?

    <p>Dense irregular</p> Signup and view all the answers

    What are the main components of intercellular elements in connective tissue?

    <p>Fibers, ground substance, tissue fluid</p> Signup and view all the answers

    Which type of connective tissue is characterized by large, wavy fibers often occurring in bundles and is very strong and flexible?

    <p>Collagenous</p> Signup and view all the answers

    Which type of connective tissue is responsible for defense, transport, storage, and repair functions in the body?

    <p>Blood</p> Signup and view all the answers

    What are the main types of fibers found in connective tissue?

    <p>Reticular, collagenous, elastic</p> Signup and view all the answers

    Which category of connective tissue includes cartilage and bone?

    <p>Supporting connective tissue</p> Signup and view all the answers

    What is the most abundant protein in the body?

    <p>Collagen</p> Signup and view all the answers

    Which syndrome can result from mutations in collagen peptidase or lysyloxidase, and lysyl-hydroxylase deficiency?

    <p>Ehlers-Danlos Syndrome</p> Signup and view all the answers

    What is the primary constituent of ground substance in connective tissue?

    <p>Glycosaminoglycans (GAGs)</p> Signup and view all the answers

    Which type of fibers form delicate networks around smooth muscle, adipocytes, nerve fibers, and blood vessels?

    <p>Reticular Fibers</p> Signup and view all the answers

    What is the characteristic of macrophages derived from monocytes?

    <p>Large, lightly staining nucleus</p> Signup and view all the answers

    What is the primary function of elastin present in the body?

    <p>Support and flexibility of connective tissue</p> Signup and view all the answers

    Which type of connective tissue cell is responsible for making collagen, elastin, and reticular fibers?

    <p>Fibroblasts</p> Signup and view all the answers

    What is the structural framework (stroma) of the liver and spleen primarily composed of?

    <p>Reticular Fibers</p> Signup and view all the answers

    What do integrins do in connective tissue?

    <p>Aid in migration of cells along collagen fibers and bind to glycoproteins.</p> Signup and view all the answers

    What is the overall incidence of Ehlers-Danlos syndrome (EDS)?

    <p>1 in 5,000 to 1 in 10,000</p> Signup and view all the answers

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