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Tissues and Skin

Connect the dots. Various functionsvarious locations, though never on the surfaceabundant extracellular matrixvarying degrees of vascularity and innervationcommonly derived from embryonic cells. Eat your fiber!. Types of connective fiberscollagenelasticreticularformed by blast cells withi

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Tissues and Skin

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    1. Tissues and Skin Karen Kraus BIOL203 February 15, 2007

    2. Connect the dots Various functions various locations, though never on the surface abundant extracellular matrix varying degrees of vascularity and innervation commonly derived from embryonic cells

    3. Eat your fiber! Types of connective fibers collagen elastic reticular formed by blast cells within the tissue

    4. Awwww, he’s so cute Blast cells secrete ground substance and fibers mature to become “cytes” fibroblast chondroblast osteoblast hemacytoblast (hematopoietic stem cell)

    5. In the beginning Mesenchyme undifferentiated; can become any type of connective tissue

    6. Connective Tissue “Proper” Fibrous types of connective tissue binding, support “loose” and “dense”

    7. He’s just a little…you know... Collagen fibers and hyaluronic acid tensile strength tendons, ligaments, aponeurosis

    8. For regularity, add fiber Collagen fibers, with a few elastic mixed in; hyaluronic acid tensile strength dermis, joint capsules, organ capsules

    9. Stretchy! Elastic fibers and hyaluronic acid allows for stretch arteries, bronchial tubes

    10. Everybody cut loose…. All three fibers, hyaluronic acid supportive, cushioning, holds fluid deep to most epithelial tissue, surrounding viscera, capillaries and glands

    11. Work it off Collagen fibers and hyaluronic acid insulation, cushioning, energy storage under the skin, around eyes, spinal cord and kidneys

    12. Retky-Ticky Fiber Reticular fibers and hyaluronic acid soft “internal skeleton” lymph nodes, spleen

    13. Shockingly functional tissue! Cartilages chondrocytes in lacunae primarily collagenous fibers in chondroitin sulfate in general, supportive

    14. Hi, my name is Lynne! Thickly packed collagen fibers supports, reinforces, resists compression ends of long bones, rib-sternum, nose, trachea, larynx; forms embryonic skeleton

    15. Eat your Wheaties Collagenous fibers with space between them shock absorption vertebral disks, knee menisci, symphysis pubis

    16. Bend it Collagen and elastin fibers maintains shape while giving support epiglottis and auricle of ear

    17. Thick Headed Collagen fibers Hydroxyapatite (calcium salts) Very strong support and protection bones

    18. What a mess! Fibrin fibers Liquid matrix (plasma) Carries nutrients (oxygen, glucose) and waste

    19. Cover yourself Epithelial membranes serous mucous cutaneous epithelium + areolar tissue

    20. Can this be fixed? Regeneration vs. Fibrosis Inflammation Organization Regeneration or fibrosis

    21. Break it down Skin Hair Sweat glands Sebaceous glands Sensory receptors Superficial blood vessels Subcutaneous fat

    22. Que fait-il? Protection Excretion Sensation Blood Reservoir Vitamin D Thermoregulation

    23. Protection Racket Barrier Melanin Antibiotic agents Langerhans cells Macrophages

    24. Raid?! Minor excretory organ Sweat glands

    25. Can you feel the rhythm? Thermoreceptors Pressure receptors Nociceptors

    26. Brrrrrrrr Blood reservoir Sweating and vasodilation Shivering and vasoconstriction

    27. Fortified with vitamins! UV radiation is good! Cholecalciferol synthesis Calcium plays a role

    28. Triple Layer Epidermis Dermis Hypodermis

    29. Above it all Stratified squamous (keratinized) Four or five layers of ever-flatter keratinocytes also includes melanocytes, Langerhans cells and Merkel cells

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