1. Histology- the study of tissues

2. 4 tissue types Epithelial Tissue Muscle Tissue Nervous Tissue
Covers both internal and external surfaces
Muscle Tissue
Highly specialized tissue designed to contract
Nervous Tissue
2 types of cells neurons (carry signal) and neuroglia (care for and support neurons).
Connective Tissue
Connects, protects, supports, insulated, energy storage, blood formation, & body tissue repair (Scars)

3. Epithelial Tissue # of layers Cell shape Simple one
Stratified  >1
Cell shape
Cuboidal- Cube shaped
Columnar – column shaped
Sqamous- squished like a pancake.

4. Epithelial Tissue- Simple
Columnar
Squamous
Cuboidal

5. Simple Squamous
Cell Membrane
Nucleus
Single layer of
Flattened cells

6. Simple Cuboidal Cell Membrane Nucleus Basement Membrane Single layer
Cube shaped
cells

7. Simple Columnar Single layer Column shaped Cell Membrane Nucleus cells
Basement
Membrane

8. Epithelial Tissue- Stratified
Squamous
Cuboidal
Columnar

9. Stratified Squamous
Cell Membrane
Nucleus
Basement
Membrane

10. Stratified Cuboidal-Not on practical
Found:
Sweat gland ducts
Ovarian follicular cells
Salivary gland ducts
Function:
Secretion
Absorption
Protection against infection

11. Stratified Columnar- Not on practical
Found:
Mammary gland ducts
Larynx
Portions of the male urethra
Function
Protection
secretion

12. Exceptions Pseudostratified Ciliated columnar Transitional Epithelium
Collapsed
Distended

13. Pseudostratified Ciliated columnar
Cell Membrane
Nucleus
Cilia
Basement
Membrane
Free surface

14. Transitional Epithelium
Nucleus
Cell Membrane
Basement
membrane

15. Muscle Tissue Highly specialized tissue designed to contract
3 types:
Skeletal Muscle
Cardiac Muscle
Smooth Muscle

16. Skeletal Muscle
Striations
Multiple Nuclei
Muscle
Fibers

17. Cardiac Muscle
Intercalated
Disk
Nucleus
Striations

18. Smooth Muscle
Nucleus
Muscle cell

19. Nervous Tissue Two major cell populations
Neurons- specialized cells that receive stimuli and conduct impulses all over the body
Neuroglia- special cells that protect, support, and insulate the more delicate neurons

20. Motor Neuron

21. Multipolar neuron/ Motor neuron
Glial Cells
Dendrite
Axon
Hillock
Nucleolus
Cell body
Axon
Nucleus

22. Connective Tissue Usually have a rich blood supply
Composed of many cell types
Great deal of non-cellular, nonliving material between cells (Matrix)
Jelly
Fibers
Interstial fluid, cell adhesion proteins, & proteoglycans
Dependent on combo is can be liquid, semisolid, gel-like or very hard
Collagen fibers: very strong and flexible but not elastic
Elastic fibers- can be stretched but return to their original shape
Reticular fibers- fine collagen fibers, not strong but fill spaces

23. Connective Tissues (CT)- all derived from mesenchyme
CT proper
Areolar CT
Dense CT
Regular
Irregular
Adipose
Reticular
Cartilage
Hyaline Cartilage
Fibrocartilage
Elastic cartilage
Bone
Blood

24. Loose (Areolar) Connective tissue
Reticular Fiber
Collagen Fiber
Nucleus
Elastic fiber

25. Loose connective tissue
Adipose Tissue
Reticular tissue
Adipocyte
Cell membrane
Reticular fiber
Nucleus
Cell of organ being supported by the fibers

26. Dense connective tissue
Nucleus
Collagen Fiber
Collagen Fiber
Nucleus
Dense Regular CT
Dense Irregular CT

27. CT-Cartilage
Hyaline Cartilage
fibrocartilage
Elastic Cartilage

28. Hyaline Cartilage
Chondrocyte
Lacuna
Perichondrium

29. Fibrocartilage
Collagen fibers
Chondrocyte

30. Elastic Cartilage
Lacuna
Elastic Fibers
Chondrocyte

31. Bone
Osteon
Lacuna
Central canal
Concentric
Lamella

32. Blood
Red Blood Cell
Plasma
White Blood Cell
Platelet