Matt Tissues Project

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Matt Tissues Project

  1. 1. Tissues <ul><li>Group of cells similar in structure and function </li></ul><ul><li>4 different types with numerous varieties </li></ul>Epithelial , Connective , Muscle , Nervous , Credits
  2. 2. Epithelial <ul><li>Sheet of cells covering a body surface or lining a body cavity </li></ul><ul><li>Forms boundaries between different environments </li></ul><ul><li>Accomplishes many functions </li></ul><ul><li>3 types </li></ul>Simple Epithelia , Stratified Epithelia , Transitional Epithelia
  3. 3. Simple Epithelial Tissue <ul><li>Single cell layer </li></ul><ul><li>Thin epithelial barrier </li></ul><ul><li>All cells have same basic shape </li></ul><ul><li>4 types </li></ul>Simple Squamous , Simple Cuboidal , Simple Columnar , Pseudostratified Columnar
  4. 4. Simple Squamous Epithelium <ul><li>Single layer of flattened cells </li></ul><ul><li>Disc shaped nuclei </li></ul><ul><li>Sparse cytoplasm </li></ul><ul><li>Functions – diffusion, filtration </li></ul><ul><li>Found where it functions are a priority </li></ul>Simple Cuboidal , Simple Columnar , Pseudostratified Columnar
  5. 5. Simple Cuboidal Epithelium <ul><li>Single layer of cube like cells </li></ul><ul><li>Functions – secretion and absorption </li></ul><ul><li>Forms walls in gland ducts and kidney tubules </li></ul>Simple Squamous , Simple Columnar , Pseudostratified Columnar
  6. 6. Simple Columnar Epithelium <ul><li>Single layer of tall cells with round nuclei </li></ul><ul><li>Many cells have cillia </li></ul><ul><li>May contain goblet cells </li></ul><ul><li>Functions – absorption and secretion </li></ul>Simple Squamous , Simple Cuboidal , Pseudostratified Columnar
  7. 7. Pseudostratified Columnar Epithelium <ul><li>Single layer of cells of varying heights </li></ul><ul><li>Nuclei at different levels </li></ul><ul><li>Functions – Secretion and propulsion </li></ul><ul><li>In male sperm carrying ducts and trachea </li></ul>Simple Squamous, Simple Cuboidal, Simple Columnar
  8. 8. Stratified Epithelia <ul><li>Two or more stacked cell layers </li></ul><ul><li>Regenerate from below </li></ul><ul><li>More durable than simple epithelia </li></ul><ul><li>Major role is protection </li></ul>Stratified Squamous, Stratified Cuboidal, Stratified Columnar
  9. 9. Stratified Squamous Epithelium <ul><li>Thick membrane with several cell layers </li></ul><ul><li>protects underlying tissues </li></ul><ul><li>Forms external epidermis </li></ul><ul><li>Found in esophagus, mouth, and vagina </li></ul>Stratified Cuboidal, Stratified Columnar
  10. 10. Stratified Cuboidal Epithelium <ul><li>Two cell layers thick </li></ul><ul><li>Rare in body </li></ul><ul><li>Found in some sweat and mammary glands </li></ul>Stratified Squamous, Stratified Columnar
  11. 11. Stratified Columnar Epithelium <ul><li>Limited distribution in body </li></ul><ul><li>Apical layer of columnar cells </li></ul><ul><li>Found in pharynx and male urethra </li></ul><ul><li>Occurs at transitional areas </li></ul>Stratified Squamous, Stratified Cuboidal
  12. 12. Transitional Epithelium <ul><li>Several cell layers </li></ul><ul><li>Cuboidal basal cells and dome shaped surface cells </li></ul><ul><li>Stretches for distention of bladder </li></ul><ul><li>Lines ureters and bladder </li></ul>
  13. 13. Connective Tissue <ul><li>Most abundant primary tissue </li></ul><ul><li>Have a common origin </li></ul><ul><li>Have a ground substance, fibers, and cells </li></ul><ul><li>Accomplish many functions </li></ul><ul><li>4 main types with several subtypes </li></ul>Connective Tissue Proper, Cartilage, Bone, Blood
  14. 14. Connective Tissue Proper <ul><li>All mature connective tissues </li></ul><ul><li>2 subclasses – loose (areolar, adipose, reticular) and dense (dense regular, dense irregular) </li></ul>Areolar, Adipose, Reticular, Dense Regular, Dense Irregular
  15. 15. Areolar Tissue <ul><li>Gel-like matrix with three connective tissue fibers </li></ul><ul><li>Wraps and cushion organs </li></ul><ul><li>Found throughout the body </li></ul>Adipose, Reticular, Dense Regular, Dense Irregular
  16. 16. Adipose Tissue <ul><li>Matrix with closely packed adipocytes </li></ul><ul><li>Reserves food fuels </li></ul><ul><li>Supports and protects organs </li></ul><ul><li>Found under skin </li></ul><ul><li>Serves needs of active organs </li></ul>Areolar, Reticular, Dense Regular, Dense Irregular
  17. 17. Reticular Tissue <ul><li>Loose ground substance with reticular fibers </li></ul><ul><li>Reticular cells are on fiber network </li></ul><ul><li>Forms stroma supporting other cell types </li></ul><ul><li>Found in lymphoid organs </li></ul>Areolar, Adipose, Dense Regular, Dense Irregular
  18. 18. Dense Regular Tissue <ul><li>Parallel collagen fibers </li></ul><ul><li>Few elastic fibers </li></ul><ul><li>Has fibroblasts </li></ul><ul><li>Attaches muscle to bone or muscle and bone to bone </li></ul><ul><li>Found in tendons and ligaments </li></ul>Areolar, Adipose, Reticular, Dense Irregular
  19. 19. Dense Irregular Tissue <ul><li>Irregularly arranged collagen fibers </li></ul><ul><li>Some elastic fibers </li></ul><ul><li>Has fibroblasts </li></ul><ul><li>Withstands tension </li></ul><ul><li>Found in dermis, submucosa, organs and joints. </li></ul>Areolar, Adipose, Reticular, Dense Regular
  20. 20. Cartilage <ul><li>Has qualities between dense connective tissue and bone </li></ul><ul><li>Tough but flexible </li></ul><ul><li>Receives nutrients by diffusion from blood </li></ul><ul><li>Cartilage matrix has tissue fluid </li></ul><ul><li>Chondroblasts produce new matrix until end of adolescence </li></ul><ul><li>3 types </li></ul>Hyaline Cartilage, Elastic Cartilage, Fibrocartilage
  21. 21. Hyaline Cartilage <ul><li>Amphorous and firm matrix </li></ul><ul><li>Chondrocytes in lacunae </li></ul><ul><li>Supports and reinforces, cushions, resists compressions </li></ul><ul><li>Is costal cartilage </li></ul><ul><li>Found in embryonic skeleton, nose, ends of bones </li></ul>Elastic Cartilage, Fibrocartilage
  22. 22. Elastic Cartilage <ul><li>Similar to hyaline cartilage with more elastic fibers </li></ul><ul><li>Maintains structure while allowing flexibility </li></ul><ul><li>Found in external ear and epiglottus </li></ul>Hyaline Cartilage, Fibrocartilage
  23. 23. Fibrocartilage <ul><li>Similar to hyaline cartilage but less firm </li></ul><ul><li>Tensile strenth </li></ul><ul><li>Absorbs compressive shock </li></ul><ul><li>Found in intervertebral discs, pubic symphisis, and discs of knee joint </li></ul>Hyaline Cartilage, Elastic Cartilage
  24. 24. Bone <ul><li>Hard, calcified matrix with many collagen fibers </li></ul><ul><li>Has osteocytes in lacunae </li></ul><ul><li>Well vascularized </li></ul><ul><li>Supports, protects, and provides levers for muscular reaction </li></ul><ul><li>Stores calcium and minerals </li></ul>
  25. 25. Blood <ul><li>Red and white cells in plasma </li></ul><ul><li>Transports respiratory gases, nutrients, and waste </li></ul><ul><li>Contained within blood vessels </li></ul>
  26. 26. Muscle Tissue <ul><li>Highly cellular </li></ul><ul><li>Responsible for most body movement </li></ul><ul><li>Contain myofilaments </li></ul><ul><li>3 kinds </li></ul>Skeletal Muscle, Cardiac Muscle, Smooth Muscle
  27. 27. Skeletal Muscle <ul><li>Long, cylindrical, and multinucleate </li></ul><ul><li>Obvious striations </li></ul><ul><li>Control voluntary movement </li></ul><ul><li>Attached to bones or skin </li></ul>Cardiac Muscle, Smooth Muscle
  28. 28. Cardiac Muscle <ul><li>Branching, striated cells that interlock </li></ul><ul><li>Propels blood into circulation </li></ul><ul><li>Found in walls of the heart </li></ul>Skeletal Muscle, Smooth Muscle
  29. 29. Smooth Muscle <ul><li>Spindle shaped cells </li></ul><ul><li>Central nuclei </li></ul><ul><li>No striations </li></ul><ul><li>Propels substances along internal passageways </li></ul><ul><li>Found in walls of hollow organs </li></ul>Skeletal Muscle, Cardiac Muscle
  30. 30. Nervous Tissue <ul><li>Main component of nervous system </li></ul><ul><li>Contains branched neurons with long cellular processes </li></ul><ul><li>Transmits electrical signals </li></ul><ul><li>Found in brain and spinal cords </li></ul>
  31. 31. Credits <ul><li>Voice – Me </li></ul><ul><li>Reticular, Dense Irregular, Stratified Cuboidal, and Connective Tissue Proper slides – somewhere on the internet (the internet was down at the time and I forgot the URLs) </li></ul><ul><li>All other pictures - Me </li></ul>

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