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Lab Exercise Classification of Tissues: Epithelial Tissue

Lab Exercise Classification of Tissues: Epithelial Tissue. Tissue : a collection of similar cells working together Epithelial Tissue : cells that line the cavities and surfaces of organs & structures Pg. 56 of book and page 12-14 of packet. Classification of Epithelia.

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Lab Exercise Classification of Tissues: Epithelial Tissue

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  1. Lab Exercise Classification of Tissues: Epithelial Tissue Tissue: a collection of similar cells working together Epithelial Tissue: cells that line the cavities and surfaces of organs & structures Pg. 56 of book and page 12-14 of packet

  2. Classification of Epithelia 1. Number of cell layers

  3. 2. Shape of the cells

  4. Lumen: The open space above the apical surface of a structure Apical Surface LUMEN Epithelial Tissue Connective Tissue BasementMembrane

  5. Lumen: The inner open space or cavity of a tubular organ, as of a blood vessel or an intestine. Apical Surface Connective Tissue LUMEN Epithelial Tissue Basement Membrane

  6. I will use BOTH microscopes AND diagrams to test you on epithelial tissues. Make sure you look at the microscopes in lab and the diagrams in this presentation.

  7. Simple Squamous EpitheliaAlveoli (air sacs) of Lungs

  8. Simple Squamous Epithelium L L L L L L

  9. Simple Cuboidal EpitheliaKidney Tubules Kidney Tubules

  10. Apical surface

  11. Simple Cuboidal Epithelium L L L

  12. Cross Section through the Small Intestine Lumen

  13. Simple Columnar Epithelium Apical surface Basement membrane Connective Tissue

  14. Simple Columnar Epithelium L Lumen L L

  15. Stratified Squamous EpitheliaSkin

  16. Apical surface Lumen

  17. Stratified Squamous Epithelium LUMEN

  18. Stratified Squamous Epithelium

  19. Pseudostratified Ciliated Columnar EpitheliaTrachea (cross section) Lumen

  20. Pseudostratified Ciliated Columnar Epithelium LUMEN Cilia

  21. Transitional EpitheliaUrinary Bladder Lumen Lumen

  22. Transitional Epithelium LUMEN

  23. PRACTICE TIME! Let’s see how you do!

  24. Name this tissue.

  25. Simple Cuboidal Epithelium Found where? Can you identify the lumen? Apical and basement membrane?

  26. Name this tissue

  27. Stratified Squamous Epithelium Where in the body is this found? Can you find the lumen/apical surface/basement membrane? What is found under the basement membrane?

  28. Name this tissue

  29. Transitional Epithelium Where can you find this in the body?

  30. Name this tissue

  31. Simple Squamous Epithelium Note it’s just ONE layer of flat shaped cells! Where in the body do you find this epithelium?

  32. Name this tissue.

  33. Simple Squamous Epithelium (again!)

  34. Name this tissue

  35. Simple Columnar Epithelium Can you see the goblet cell? What do they make?

  36. Name this tissue.

  37. Pseudostratified Ciliated Columnar Epithelium Do you see the cilia? Where in the body can you find this epithelium?

  38. Epithelia Image Gallery

  39. Simple Squamous Epithelia

  40. Simple Squamous Epithelia

  41. Simple Cuboidal Epithelia

  42. Simple Cuboidal Epithelia

  43. Simple Cuboidal Epithelia

  44. Simple Columnar Epithelia: pointer is on the basement membrane

  45. Simple Columnar Epithelia: pointer is on a goblet cell

  46. Simple Columnar Epithelia

  47. Simple Columnar Epithelia

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