Lecture #53

  1. What are the two types of epithelial ?
    covering and glandular
  2. what is the function of epitheliium
    • Covering
    • Line
    • Protect 
    • Absorption 
    • Secretion
    • Specialized sensory
  3. what is the characteristics  of epitheliium
    • tightly packed 
    • little ECm
    • avascular 
    • polarized
    • innervated 
    • highly regenerative
    • associated with ct basement membrance
  4. what are the two side of epithelium
    apical side that faces the world and the basolateral side that faces the BM
  5. what are some specialization of apical side of epithilia
    • microvili ( brush border); they are mobile  they have actin & myosin
    • cili
  6. epethilial classification
    • squamous ( flat)
    • cuboidal  ( cube) 
    • columbar  ( colmun) 

    • simple- single layer 
    • stratified: multiple layers
  7. what is basement membrane
    thin sheet of molecules
  8. what is the function of the Basement membrane
    • structural support 
    • attached epithelial
    • filtration 
    • scaffold for regeneration/repair
    • physical barrier
  9. what macrocolecules create the structure of the basal lamina?
    proteoglycans
  10. Desosomes
    • like a bolt. They are couplingbetween adjacent cells
    • they resist stress and stress
    • aka macula adherens
  11. Hemidesmosomes
  12. adherence junctions
    • below tigh junctions
    • they are strong
  13. Gap junctions
    • channels between 2 adjecent cells 
    • ions and small molecules move through these junctions
  14. location of simple squamous eithelia
    • renal corpuscles
    • Alveoli
    • Linning og heart
    • Vessel
    • Serosa
  15. what is the function of simple cuboidal epithelium
    mostly secretion
  16. what is the function of simple columbar epithelium
    Absorption and secretion ..
  17. what is the thickest eputheliual tissue
    stratified simple epithelium
  18. development of glandular epithelia on exocrine glands
  19. development of glandular epithelia on edocrine glands
  20. Merocrine secretion is done by
    • exocytosis  
    • eg solivary glands
  21. Holocrine secretion is done by
    • whole cell burst and disintergrates  
    • eg sebaceous glands
  22. Apocrine secretion is done by
    • apical portion is lost
    • e.g. mamilary glands
  23. serous fluid
Author
Iana
ID
353176
Card Set
Lecture #53
Description
Histology of the Epithelium
Updated