1. Histology I. Introduction A. Definitions B. Types

2. 1. EpitheliumCovering / Lining and forms most Glands

3. 2. ConnectiveFibrous with extracellular matrix

4. 3. MuscularFibrous with intracellular matrix

5. 4. NervousPacked with cellular matrix

6. II. Epithelial Tissue A. Defining Characteristics

7. 1. Densely packed cells with a “free” surface 2. Avascular 3. “Bound” surface underlain with Connective Tissue and basement membrane “bm” 4. Not innervated

8. B. Functions

9. 1. Protection from entry or exit 2. Excretory & Secretory 3. Absorptive 4. Sensory Reception 5. Separates two environments

10. C. Classification of Epithelial Sheets

11. 2. Based on cellular shape a. Simplec. Stratifiedb. Pseudostratified 1. Based on number of cell layers a. Squamousb. Cuboidalc. Columnar

12. a. Simple Squamous 3. Classes & Functions Figure 4.3a

13. 3. Classes & Functions b. Simple Cuboidal Figure 4.3b

14. 3. Classes & Functions c. Simple Columnar Figure 4.3c

15. d. Pseudostratified Figure 4.3d

16. e. Stratified Squamousf. Stratified Cuboidal & Columnar Figure 4.3e

17. g. Transitional Figure 4.3f

18. D. Classification of Epithelial Glands

19. 2. Based on Complexity a. Exocrineb. Endocrine 1. Based on Function a. Unicellularb. Multi-cellular 3. Based on Mode of Secretion c. Holocrineb. Apocrinea. Merocrine

20. Figure 4.4

21. Figure 4.5

22. Figure 4.6

23. III. Connective Tissue A. Defining Characteristics

24. 1. Cells embedded into matrix (ground substance and fibers) 2. Vascular supply 3. Many cell types but one resident cell 4. Innervated 5. Function depends on location and packing of fibers

25. B. Cell Types

26. 1. Fibroblast 2. Macrophage 3. Plasma Cell 4. Mast cell 5. Adipocyte

27. Figure 4.7

28. C. Fiber Types

29. 1. Collagen 2. Elastin 3. Reticular

31. D. Classes

32. 2. Based on Density of Ground Substance a. Looseb. Dense 1. Based on Packing of Fibers (Proper) a. Cartilageb. Bonec. Blood

33. Figure 4.8a 1a. Proper Loose C. T., Areolar

34. 1a. Proper Loose C. T., Adipose Figure 4.8b

35. 1a. Proper Loose C. T., Reticular Figure 4.8c

36. 1b. Proper Dense C. T., Regular Figure 4.8d

37. 1b. Proper Dense C. T., Irregular Figure 4.8e

38. 1b. Proper Dense C. T., Elastic Figure 4.8f

39. 2a. Cartilage C. T., Hyaline Figure 4.8g

40. 2a. Cartilage C. T., Elastic Figure 4.8h

41. 2a. Cartilage C. T., Fibrocartilage Figure 4.8i

42. 2b. Bone C. T., Compact vs. Cancellous (or spongy) Figure 4.8j

43. 2c. Blood C. T. Figure 4.8k

44. IV. Nervous Tissue A. Defining Characteristics

45. 1. Packed cells mostly designed for rapid communication 2. Classed based on location and direction of impulses 3. Highly vascularized with barriers

46. 1. Packed cells Figure 4.9

47. 2. Location and Direction

48. V. Muscle Tissue A. Defining Characteristics

49. 1. Packed cells (called fibers) filled with contractile proteins 2. Classed based on organization of proteins 3. Highly vascularized 4. Highly Innervated

50. B. Classes

51. 1. Based on Location and Organization of Fibers a. Skeletal Figure 4.10a

52. 1. Based on Location and Organization of Fibers b. Cardiac Figure 4.10b

53. 1. Based on Location and Organization of Fibers c. Smooth Figure 4.10c

54. Knowledge stretches your goals.