2. Tissues Definition:

3. Tissues Definition: Collections of cells

4. Tissues Definition: Collections of cells and extracellular materials

5. Tissues Definition: Collections of cells and extracellular materials that perform specific functions

6. Tissues Intercellular Connections

7. Tissues Intercellular Connections – Gap junctions

8. Tissues Intercellular Connections – Gap junctions – Tight junctions

9. Tissues Intercellular Connections – Gap junctions – Tight junctions – Intermediate junctions and desmosomes

10. Early Embryonic Tissue: the Primary Germ Layers

11. – Ectoderm

12. Early Embryonic Tissue: the Primary Germ Layers – Ectoderm – Mesoderm

13. Early Embryonic Tissue: the Primary Germ Layers – Ectoderm – Mesoderm – Endoderm –(click here for embryonic/fetal development animation)(click here for embryonic/fetal development animation)

14. Primary Tissue Types

15. Primary Tissue Types (Derived from the Embryonic Tissue)

16. – Epithelial Tissue

17. Primary Tissue Types (Derived from the Embryonic Tissue) – Epithelial Tissue – Connective Tissue

18. Primary Tissue Types (Derived from the Embryonic Tissue) – Epithelial Tissue – Connective Tissue – Muscle Tissue

19. Primary Tissue Types (Derived from the Embryonic Tissue) – Epithelial Tissue – Connective Tissue – Muscle Tissue – Neural Tissue

20. Specialization of Epithelial Cells

21. – Polarity

22. Specialization of Epithelial Cells – Polarity – Cilia *Cilia *

23. Specialization of Epithelial Cells – Polarity – Cilia – Stereocilia *Stereocilia *

24. Specialization of Epithelial Cells – Polarity – Cilia – Stereocilia – Microvilli

25. Characteristics of Epithelial Tissue

26. – Layers of cells that form a barrier

27. Characteristics of Epithelial Tissue – Layers of cells that form a barrier – Free surface

30. Characteristics of Epithelial Tissue – Layers of cells that form a barrier – Free surface – Basement membrane

34. Characteristics of Epithelial Tissue – Layers of cells that form a barrier – Free surface – Basement membrane – Closely packed cells

36. Characteristics of Epithelial Tissue – Layers of cells that form a barrier – Free surface – Basement membrane – Closely packed cells – Avascular

37. Characteristics of Epithelial Tissue – Layers of cells that form a barrier – Free surface – Basement membrane – Closely packed cells – Avascular – Regeneration

38. Functions of Epithelial Tissue

39. – Physical protection

42. Functions of Epithelial Tissue – Physical protection – Permeability Control

45. Functions of Epithelial Tissue – Physical protection – Permeability Control – Sensations

47. Functions of Epithelial Tissue – Physical protection – Permeability Control – Sensations – Secretions

50. Classification of Epithelial Tissue

51. Functional Classification

52. Classification of Epithelial Tissue Functional Classification – Glandular epithelium

53. Classification of Epithelial Tissue Functional Classification – Glandular epithelium – Lining and covering epithelium

54. Anatomical Classification

55. Anatomical Classification (based on shape of cells

56. Anatomical Classification (based on shape of cells and number of cell layers)

57. – Simple Squamous

58. Anatomical Classification (based on shape of cells and number of cell layers) – Simple Squamous – Simple Cuboidal

59. Anatomical Classification (based on shape of cells and number of cell layers) – Simple Squamous – Simple Cuboidal – Simple Columnar

60. Anatomical Classification (based on shape of cells and number of cell layers) – Simple Squamous – Simple Cuboidal – Simple Columnar – Stratified Squamous

61. Anatomical Classification (based on shape of cells and number of cell layers) – Simple Squamous – Simple Cuboidal – Simple Columnar – Stratified Squamous – Transitional

62. Anatomical Classification (based on shape of cells and number of cell layers) – Simple Squamous – Simple Cuboidal – Simple Columnar – Stratified Squamous – Transitional – Pseudostratified Columnar

63. Anatomical Classification (based on shape of cells and number of cell layers) – Simple Squamous – Simple Cuboidal – Simple Columnar – Stratified Squamous – Transitional – Pseudostratified Columnar

64. Maintenance of Epithelial Structural Integrity

65. – Intercellular connections

66. Maintenance of Epithelial Structural Integrity – Intercellular connections Desmosomes and intermediate junctions

68. Maintenance of Epithelial Structural Integrity – Intercellular connections Desmosomes and intermediate junctions – Basement membrane

70. Maintenance of Epithelial Structural Integrity – Intercellular connections Desmosomes and intermediate junctions – Basement membrane – Regeneration ability –--------------------------------------------------------------------------------