1. Tissues
Collections
4 basic types
4 basic functions

2. Epithelial Tissue Lines body cavities Covers body surfaces
Also forms glands

3. Epithelium = Boundary Tissue
Protection

4. Epithelium = Boundary Tissue
Sensation

5. Epithelium = Boundary Tissue
Filtration

6. Epithelium = Boundary Tissue
Absorption & Secretion

7. Epithelium = Boundary Tissue
Excretion

8. ET CT Mostly matrix Epithelial Characteristics – Cellularity
Mostly cells ET CT
Mostly matrix

9. Epithelial Characteristics – Polarity
There’s a difference
Apical
Apical
Basal
Basal

10. Epithelial Characteristics – Special Contacts
3 Primary Types
Skin

11. Epithelial Characteristics – Avascularity + Lots of Innervation
Remember – it’s a boundary tissue!
Blood vessels
Diffusion

12. Collagen Epithelial Characteristics – Connective Tissue Support
Basement
Membrane

13. Mitosis Epithelial Characteristics – Regeneration
Remember – it’s a boundary tissue!
Damage
Mitosis

14. By the # of Cell Classifying By the Shape of Layers 2 Ways of
Epithelia
By the Shape of
the Apical Cells

15. 1 layer of cells Classifying Epithelia By the # of Stratified
Simple
epithelium
Stratified
Classifying
Epithelia
By the # of
Cell Layers

16. Apical surface
Basal surface
Basement
Simple epithelium
membrane
Apical surface
Basement
membrane
Basal surface
Stratified epithelium

18. Squamous Classifying Epithelia Cuboidal by the Shape of Columnar
Basement
membrane
Nucleus
Squamous
Squamous cell
Classifying
Epithelia
Nucleus
Basement
membrane
Cuboidal
by the
Cuboidal cell
Shape of
the Apical
Columnar
Cells
Nucleus
Basement
membrane
Columnar cell

19. Simple Squamous Epithelium
THIN
EXCHANGE
LOCATIONS

20. Simple Cuboidal Epithelium
THIN
SECRETION
ABSORPTION
LOCATIONS

21. Simple Columnar Epithelium
THIN
SECRETION
ABSORPTION
LOCATIONS

22. Microvilli   SA
Cilia  Sweeping
Goblet cells  Mucus

23. APPEARANCE HEIGHTS FUNCTIONS LOCATIONS
Pseudostratified Columnar Epithelium
APPEARANCE
HEIGHTS
FUNCTIONS
LOCATIONS

24. THICK PROTECTION LOCATIONS KERATINIZED vs. NONKERATINIZED
Stratified Squamous Epithelium
THICK
PROTECTION
LOCATIONS
KERATINIZED vs.
NONKERATINIZED

25. Transitional Epithelium
STRATIFIED
SHAPE CHANGE
LOCATIONS

26. Epithelial Forms Glands Endocrine Glands Exocrine Glands Tissue
2 Basic Types
Endocrine
Glands
Exocrine
Glands

27. Secrete materials into ducts or onto body surfaces
Exocrine Glands
Secrete materials into
ducts or onto body
surfaces
Examples

28. Endocrine Glands
Ductless
Secrete hormones
into blood
Examples

29. Connective Tissue
Blood
Supports
Connects
Binds

30. • Connective Tissue Proper
Types of Connective Tissue
• Connective Tissue Proper
• Supporting Connective Tissue
• Fluid Connective Tissue

31. Mostly products of cells
Connective Tissue
Not very cellular
Mostly products of cells
Collectively called the extracellular matrix
Ground Substance
Fibers

32. Collagen Fibers
CT Fibers
3 Main Types
Reticular Fibers
Elastic Fibers

33. Connective Tissue Proper Supportive Connective Tissue
1. Bone
2. Cartilage
Differ in hardness
Blood/Lymph

34. Loose Dense Areolar CT Adipose Tissue Reticular Tissue CT Proper
Dense Regular CT
Dense Irregular CT
Dense

35. Areolar CT
Packing material
Underlies epithelia
“Areola” = open space

36. All 3 fiber types Other cell types: Areolar CT
Primary cell type = fibroblast
Other cell types:
Macrophage
Mast cell
All 3 fiber types

37. Contain large lipid droplets Forces the nucleus into an eccentric
Adipose Tissue
Dominated by adipocytes
Sparse matrix
Contain large
lipid droplets
Forces the nucleus
into an eccentric
position

38. Adipose Tissue
Cushioning
Insulation
Energy storage

39. “Reticulum” = little net
Reticular Tissue
Like areolar
Reticular fibers only
Reticular cells
“Reticulum” = little net

40. Reticular Tissue
Forms stroma
Supporting
mesh

41. Some fibroblasts High tensile strength Dense Regular CT
Parallel bundles of collagen fibers
Some fibroblasts
High tensile strength

42. Dense Regular CT

43. Some fibroblasts Strong Dense Irregular CT
Bundles of collagen fibers running
in multiple directions
Some fibroblasts
Strong

44. Dense Irregular CT

45. Cartilage Resists compression Resists tension Lacks blood vessels and
nerves

46. Types of Cartilage
• Hyaline
• Elastic
• Fibrocartilage

47. Chondrocyte Lacuna Hyaline Cartilage Chondroblast “cartilage maker ”
“Glassy” matrix
(collagen fibers)
Chondrocyte
Lacuna

48. Hyaline Cartilage
Costal
cartilage

49. Elastic Cartilage
Contains prominent
elastic fibers
Stretch and recoil

50. Fibrocartilage
More and stronger
collagen