1. Histology Review Human Anatomy and Physiology Sam Rhodes, Ph.D. Franklin College

2. Epithelial Tissues Form coverings, linings and glands May be simple (single sheet) or stratified Single sheets often attach to a layer of connective tissue called the basement membrane

3. Epithelial Tissues

4. Simple Squamous Epithelium

5. Simple Cuboidal

6. Simple Columnar Can you find the goblet cells?

7. Ciliated, Pseudostratified Columnar Epithelium

8. Stratified Squamous Epithelium Side view with layers flaking upward (epidermis)

9. Transitional Epithelium 400 X magnification100 X magnification

10. Connective Tissues Bind cells together, provide support, provide protection. All connective tissues are composed of living cells, a non-living matrix, and protein fibers. Matrix may be rigid (bone), flexible (cartilage), gel (areolar), or liquid (blood). White (tough and stiff) fibers are collagen Yellow (thin and elastic) are elastin. Fibroblasts produce the elastin and collagen

11. Connective Tissues

12. Areolar (loose) Connective Tissue Identify the tissue, the fibroblasts, collagen and elastin

13. Hyaline Cartilage Identify the matrix, chondrocytes, and the lacuna

14. Lacuna Chondrocyte Matrix

15. Compact Bone Identify the osteons, osteonic (Haversian) canals, and the osteocytes

16. Adipose Tissue Adipose tissue layered with muscle

17. Blood (connective Tissue)

18. Muscle Tissue Contractile Excitable Skeletal (causes movements of the skeleton) Cardiac (only found in the heart) Smooth (found in blood vessels, reproductive tract, digestive tract) May have striations (skeletal and cardiac)

19. Muscle Tissue

20. Skeletal Muscle Can you find the striations?

21. Cardiac Muscle Find the striations and the intercalated disks

22. Smooth Muscle

23. Nervous Tissue Excitable Generates Action Potentials (electric impulses) Controls and coordinates other tisssues/organs Composed of neurons and neuroglia

24. Nervous Tissue

25. Neurons (spinal cord smear)

26. Neurons Purkinje Cells in Cerebellum Pyramidal Cells in Cerebrum

27. Motor End Plate (Neuromuscular Junction)

28. Intestine

29. Trachea

30. Integumentary System (Skin) Provides physical protection against the environment Dramatically reduces dehydration Provides protection against infection by bacteria, molds, parasites Thermoregulation (blood vessel dilation and constriction) Vitamin D production Protection against UV light (melanocytes) Sense of touch, temperature, pain

31. Epidermis Dermis Hypodermis