Lab 3

Card Set Information

Lab 3
2014-08-30 14:02:54
Epithelial Tissue

Identify the 4 major tissue types Identify the basic types and properties of epithelial tissue at the microscopic level Identify and describe locations within the body where the different types of epithelial tissue would be found Identify the basic types and properties of glands at the microscopic level
Show Answers:

  1. Epithelial tissue
    A layer of cells that forms a superficial covering or an internal lining of a body cavity or a vessel; Lines, protects, secretes
  2. Muscle tissue
    A tissue characterized by the presence of cells capable of contraction; includes skeletal, cardiac, and smooth muscle tissues; Excitable, contractile tissue for movement
  3. Nervous tissue
    Excitable tissue used to send short term signals throughout the body
  4. Connective tissue
    Provides a structural framework that stabilizes the relative positions of the other tissue types; includes connective tissue proper, cartilage, bone, and blood; contains cell products, cells, and ground substance; Living cells in a non-living matrix (EX: ears)
  5. Apical surface
    Top; exposed to "open" air
  6. Basal surface
    Attached to basement membrane
  7. Basement membrane
    A layer of filaments and fibers that attach an epithelium to the underlying connective tissue; also called basal lamina
  8. Simple squamous epithelium
    Reduces friction, controls vessel permeability, performs absorption and secretion; Locations: Alveoli of lungs
  9. Stratified squamous epithelium
    Provides physical protection against abrasion, pathogens, and chemical attack; Location: Surface of skin
  10. Simple cuboidal epithelium
    Limited protection, secretion, absorption; Location: Thyroid gland
  11. Simple columnar epithelium
    Protection, secretion, absorption; Location: Lining of stomach
  12. Goblet cell
    White areas or patches; produce mucus, lines cells to keep moist
  13. Cilia
    Provides movement
  14. Pseudostratified ciliated columnar epithelium
    Protection, secretion, move mucus with cilia; Location: Lining of nasal cavity
  15. Keratinized
    Hardened tissues, filament of protein, water-resistant; With dead cells (EX: hair)
  16. Non-keratinized
    No dead cells (EX: oral cavity, pharynx, anus)
  17. Stratified columnar epithelium
    Protection: Location: Small areas of the pharynx
  18. Transitional epithelium
    Permits expansion and recoil after stretching; Location: urinary bladder
  19. What are glands composed of?
    Collections of epithelial cells (or structures derived from epithelial cells) that produce secretions
  20. Exocrine gland
    Secretes onto the body surface or into a passageway connected to the exterior; Secretes through ducts; Products go to places "outside" the body (sweat glands, tear glands, adrenaline glands)
  21. Endocrine gland
    Secretes hormones into the blood; Secretes into interstitial fluid. No ducts.
  22. Tissue
    A collection of specialized cells and cell products that performs a specific function