1. BODY TISSUES ( CONT.) Mrs. Barnes H A&P

2. Body Tissues 1.Types of Epithelium 2.Connective Tissue 3.Muscle Tissue 4.Nervous Tissue 5.Tissue Repair

3. Epithelium 1.What is Epithelium? Covering, lining, and glandular tissue 2. What is its function? Protection Absorption Secretion 3. Types- Simple or Stratified 4. Shapes- Squamous, Cuboidal, Columnar

4. Simple Epithelia Simple Squamous- Fit together like floor tiles Air sacs of lungs Walls of capillaries Forms serous membranes

5. Simple Epithelia Simple Cuboidal Glands (ex. Salivary Glands and Pancreas) Walls of Kidney Tubules Covers Ovaries

6. Simple Epithelia Simple Columnar- Goblet Cells present Line the Digestive Tract What do Goblet Cells do?

7. Simple Epithelia Pseudostratified columnar- rest on the basement membrane Lines most of the respiratory tract Do you think Goblet Cells are used? Pg. 92

8. Stratified Epithelia Stratified squamous- Most Common Type Consists of several layers Found in areas that receive a good deal of friction Esophagus, mouth, and outer portion of the skin

9. Stratified Epithelia These 2 types are fairly rare in the body Found in ducts and glands Stratified cuboidal Stratified columnar

10. Stratified Epithelia Transitional Forms the lining of only a few organs Ex. Bladder, uterus, part of the urethra

11. Connective Tissue Connects body parts, Most abundant tissue, Found everywhere in body. Functions: Protecting Supporting Binding together other body tissues

12. Connective Tissue Well vascularized Exceptions- tendons, ligaments, and cartilage What does this mean for healing?

13. Connective Tissue Types Bone Cartilage Dense Connective Tissue Loose Connective Tissue Blood

15. Cartilage Found in larynx, attaches ribs to breatbone, covers ends of bones. Ex. Hyaline Cartilage (Most Abundant) Fetus made of this cartilage

16. Dense Connective Tendons and Ligaments; lower layers of skin (Dermis) What do Tendons connect? Ligaments? p96

17. Loose Connective Have more cells and fewer fibers than any other connective tissue except blood. 3 Types (Page 95) Areolar Tissue- “Cobwebby” tissue Adipose Tissue- Fat Reticular

18. Blood Vascular Tissue “Considered a connective tissue because it consists of blood cells surrounded by a nonliving, fluid matrix called blood plasma” p 97 We will discuss more in Ch. 10

19. Muscle Tissue 3 Types: Skeletal Cardiac Smooth

20. Muscle Tissue Skeletal- also called Muscle Fibers Controlled Voluntarily Muscles of the body Shorten when contracted; Pull bones or skin Cells are long, cylindrical, obvious striations (stripes)

21. Muscle Tissue Cardiac- Only in the heart Involuntary control Striated Intercalated discs- junctions

22. Muscle Tissue Smooth- also called Visceral p 98 No striations are visible Cells have single nucleus Pointed at ends Found in walls of hollow organs; stomach, uterus, and blood vessels

23. Nervous Tissue Deals with the Neurons in the body Neurons conduct impulses over long distances in the body (p.100) Parts of the Nervous System: Brain, Spinal Cord, and Nerves

24. Tissue Repair When trauma occurs the body’s inflammatory and immune responses are stimulated. The healing process begins almost immediately. Inflammation is a generalized body response

25. Tissue Repair Regeneration- replacement of destroyed tissue by the same kind of cells Fibrosis- repair by dense connective tissue; a scar. This depends on the type of tissue damage and the severity.

26. Tissue Repair Steps--- Inflammation sets the stage Granulation tissue forms Regenerations and fibrosis effect permanent repair P.101