1. Tissues Chapter 4

2. 5/8/2015copyright (your organization) 20032 What is a Tissue? A group of SIMILAR cells that function together to carry out specialized actions.

3. 5/8/2015copyright (your organization) 20033 What is Histology? Study of Tissues

4. 5/8/2015copyright (your organization) 20034 4 Types of Tissues Epithelial Connective Muscle Nervous

5. Epithelial Tissue

6. 5/8/2015copyright (your organization) 20036 Forms the coverings of all of the body’s surfaces Lines body cavities Functions: –Protection –Secretion –Absorption –Excretion –Filtration –Diffusion –Sensory Reception

7. 5/8/2015copyright (your organization) 20037 Types of Epithelial Tissue

8. 5/8/2015copyright (your organization) 20038 Simple Squamous Allows for diffusion, filtration, and osmosis Examples: –Lines heart –Lines Blood vessels –Lines Alveoli

9. 5/8/2015copyright (your organization) 20039 Stratified Squamous Lining of smooth muscles Superficial layer of skin Esophagus, mouth, vagina Aides in protection

10. 5/8/2015copyright (your organization) 200310 Simple Cuboidal Aides in secretion and absorption Examples –Surface of ovaries –Kidney tubules

11. 5/8/2015copyright (your organization) 200311 Stratified Cuboidal Aides in protection Examples: –Sweat gland ducts –Male urethra

12. 5/8/2015copyright (your organization) 200312 Simple Columnar (NON-CILIATED) Lines: –GI tract –Gall bladder Aides in: –Secretion –Absorption

13. 5/8/2015copyright (your organization) 200313 Ciliated Simple Columnar Located in: –Respiratory tract –Fallopian tubes –Uterus –Sinuses

14. 5/8/2015copyright (your organization) 200314 Transitional Located in: –Urinary bladder –Uterus –Urethra

15. 5/8/2015copyright (your organization) 200315 Pseudostratified Columnar Aides in the movement of material Ciliated  Upper Respiratory tract Non-ciliated  Epididymus and male urethra

16. Connective Tissues

17. 5/8/2015copyright (your organization) 200317 Functions Bind structures together Supports the organs and the body (Framework) Stores fat Transports substances Protects from disease Helps repair tissue damage

18. 5/8/2015copyright (your organization) 200318 Types 1.Areolar (loose) Stretchable, superficial, soft tissue Examples: Surrounds blood vessels and nerves Attaches skin to muscles (Fascia)

19. 5/8/2015copyright (your organization) 200319 2. Adipose: Functions –Stores Fats –Protects and supports –Insulates –Food reservoir Located anywhere fat is in excess

20. 5/8/2015copyright (your organization) 200320 3. Dense (fibrous): Provide flexible but strong connections Examples: –Tendons (Bone-Muscle) –Ligaments (Bone-Bone) –Aponeuroses (Muscle-Muscle)

21. 5/8/2015copyright (your organization) 200321 4. Reticular: Functions –Forms network of spleen, lymph nodes, and bone marrow –Provides defense against microorganisms

22. 5/8/2015copyright (your organization) 200322 Bone-> Compact and spongy Blood-> 55% liquid/plasma 45% formed elements Specialized Types

23. 5/8/2015copyright (your organization) 200323 Cartilage- > Hyaline Fibrous Elastic

24. 5/8/2015copyright (your organization) 200324 All have nerve supply (Except Cartilage) Very Vascular (Except Cartilage) All consist of cells and matrix –Matrix=fibers between the cells

25. Muscle Tissue

26. 5/8/2015copyright (your organization) 200326 Components Made up of cells that can shorten or contract in order to produce movement in body parts Well supplied with blood vessels Cells are long and slender (muscle fibers) Actin and myosin are contractile proteins. –http://www.sci.sdsu.edu/movies/actin_ myosin.htmlhttp://www.sci.sdsu.edu/movies/actin_ myosin.html

27. 5/8/2015copyright (your organization) 200327 3 Types of Muscle Tissues 1.Skeletal->regular (voluntary) Aka. Striated (striped) Many nuclei per cell b/c extremely long 2.Smooth->intestines (involuntary) Non-striated 1.Cardiac->heart (involuntary) Striated

28. Nervous Tissue

29. 5/8/2015copyright (your organization) 200329 Located in the brain, spinal cord, and nerves Coordinates and controls many of the bodies activities Stimulates muscle contractions Creates awareness Has a role in emotions, memory, and reasoning.

30. 5/8/2015copyright (your organization) 200330

31. Membranes

32. 5/8/2015copyright (your organization) 200332 Flat sheet of pliable tissue that covers or lines a body part 1.Mucous Membranes- > line body cavity that opens to the outside Ex: Respiratory and Digestive Tracts 2.Serous Membranes- > line body cavity that does not open to the outside ~ Layers 1.Parietal-attaches to cavity wall 2.Visceral-attaches to organs ~Types 1.Pleural 2.Pericardial 3.Peritoneum