2. Categories of Tissues Jenna Hellack Jan 2001 Animal Tissues

3. Categories of Tissues Jenna Hellack Jan 2001 Categories of Tissues Epithelium Connective Muscle Nervous

4. Categories of Tissues Jenna Hellack Jan 2001 Epithelium Lines, covers, and protects other tissues and organs. Characterized by: junked together FCells tightly junked together basement membrane FThe presence of a cell secretion called the basement membrane. Named by: FCell shape FOther characteristics of the cells. Squamous, CuboidalColumnar Squamous, Cuboidal, and Columnar SquamousCuboidalColumnar SquamousCuboidalColumnar

5. Categories of Tissues Jenna Hellack Jan 2001 Squamous Epithelium Cells very thin, much wider than they are thick. FSimple Squamous Epithelium Simple Squamous EpitheliumSimple Squamous Epithelium  Air sacs of respiratory  Lining of blood vessels, heart and lymphatic tubes FStratified Squamous Epithelium Stratified Squamous EpitheliumStratified Squamous Epithelium  Skin  Vagina  Esophagus  Mouth

6. Categories of Tissues Jenna Hellack Jan 2001 Examples of Simple Squamous Epithelium

7. Categories of Tissues Jenna Hellack Jan 2001 Stratified Squamous Epithelium

8. Categories of Tissues Jenna Hellack Jan 2001 Cuboidal Epithelium Cells cube shaped- secretion and absorption. FKidney tubules FDuct and small glands FSurface of ovary

9. Categories of Tissues Jenna Hellack Jan 2001 Columnar Epithelium Elongated cells, much longer than they are wide. FSimple Columnar Epithelium Simple Columnar EpitheliumSimple Columnar Epithelium  A single layer of cells that line the digestive tract, gallbladder and excretory ducts of some glands. Has microvilli at surface for absorption. FPseudostratified ciliated columnar epithelium Pseudostratified ciliated columnar epitheliumPseudostratified ciliated columnar epithelium  Lines the bronchi, trachea, uterine tubes and some of the uterus. Propels mucus or reproductive cells by ciliary action.

10. Categories of Tissues Jenna Hellack Jan 2001 Simple Columnar epithelium

11. Categories of Tissues Jenna Hellack Jan 2001 Pseudostratified Ciliated Columnar Epithelium

12. Categories of Tissues Jenna Hellack Jan 2001 Connective Tissue Characterized by the cells widely separated from each other in a matrix that is produced by the cells. Tissue protects and supports. Cell Matrix composed of two regions FGround  Liquid (sol), Gel, Gum or solid FFibers  Non-elastic (= white or Collagen)  Elastic (= yellow fibers) Types of Connective tissue Types

13. Categories of Tissues Jenna Hellack Jan 2001 Types of Connective Tissue Loose (Areolar) Connective Tissue Loose (Areolar) Connective Tissue Loose (Areolar) Connective Tissue Loose (Areolar) Connective Tissue Dense Connective Tissue Dense Connective Tissue Dense Connective Tissue Dense Connective Tissue Adipose Adipose Adipose Cartilage Cartilage Cartilage Bone Bone Bone Blood Blood Blood

14. Categories of Tissues Jenna Hellack Jan 2001 Loose Connective Tissue (Areolar) Gel like ground with both elastic and non-elastic fibers running though the ground in many directions. FWraps and cushions organs FUnder the skin

15. Categories of Tissues Jenna Hellack Jan 2001 Dense Regular Connective Tissue Nuclei and fibers arranged in parallel rows. FTendons and ligaments FFibers mostly non-elastic

16. Categories of Tissues Jenna Hellack Jan 2001 Adipose (Fat) Function as storage cells for adipose (lipids) Adipose cells contain a large vacuole which in the live cell contains lipids. Cell nucleus and cytoplasm are pushed out to edge of cell membrane.

17. Categories of Tissues Jenna Hellack Jan 2001 Cartilage Ground of matrix is gum like. Cells are found in Lacunae within the matrix. Fibers may be elastic or non-elastic, or a form of non-elastic called reticular(where the non-elastic fibers of very thin) FHyaline Cartilage FHyaline Cartilage-example on the ends of bonesHyaline CartilageHyaline Cartilage FElastic Cartilage FElastic Cartilage- example ear cartilageElastic CartilageElastic Cartilage FNon-elastic Cartilage- example nose cartilage.

18. Categories of Tissues Jenna Hellack Jan 2001 Hyaline cartilage

19. Categories of Tissues Jenna Hellack Jan 2001 Elastic Cartilage

20. Categories of Tissues Jenna Hellack Jan 2001Bone FGround of matrix is Solid (Calcium carbonate). FHas blood supply and nerves running through the Haversian canal systems.

21. Categories of Tissues Jenna Hellack Jan 2001 Vascular Tissue (Blood) Liquid matrix = plasma F90% water F10%Plasma proteins, electrolytes, hormones, oxygen, glucose etc. Formed elements FErythrocytes FErythrocytes -48billion(female) to 54 billion (male) cell / ml of blood in humans. Mammals are enucleated while rest of the vertebrates they have nucleiErythrocytes FLeukocytes FLeukocytes -about 7.5 million / ml of bloodLeukocytes FPlatelets FPlatelets -blood clottingPlatelets

22. Categories of Tissues Jenna Hellack Jan 2001Blood

23. Categories of Tissues Jenna Hellack Jan 2001 Muscle Tissue Tissue with cells having fibers specialized for contraction. FSkeletal Muscle FSkeletal Muscle (Striated, voluntary)Skeletal MuscleSkeletal Muscle  Parallel elongated cells (fibers)  multinucleated and each cell is the length of the muscle.  Light meat, Dark meat—Slow twitch, fast twitch muscle FSmooth Muscle FSmooth Muscle (Visceral, involuntary)Smooth MuscleSmooth Muscle  Cells are long and tapered.  Organized into sheets of muscle. FCardiac Muscle Cardiac MuscleCardiac Muscle  Intercalated disc  Myogenic  branched

24. Categories of Tissues Jenna Hellack Jan 2001 Skeletal Muscle

25. Categories of Tissues Jenna Hellack Jan 2001 Smooth Muscle

26. Categories of Tissues Jenna Hellack Jan 2001 Cardiac Muscle

27. Categories of Tissues Jenna Hellack Jan 2001 Nervous Tissue Cells specialized to polarize and depolarize. Cell is a neuron

28. Categories of Tissues Jenna Hellack Jan 2001 End of Tissue presentation