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Chapter 4.3: Tissues

Chapter 4.3: Tissues. Connective Tissues. Most diverse Never exposed to outside Vascular—have blood vessels Receptors for pain, pressure and temperature. Figure 4.7. Functions of Connective Tissue. Support/Protection Transportation

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Chapter 4.3: Tissues

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  1. Chapter 4.3: Tissues

  2. Connective Tissues • Most diverse • Never exposed to outside • Vascular—have blood vessels • Receptors for pain, pressure and temperature

  3. Figure 4.7

  4. Functions of Connective Tissue • Support/Protection • Transportation • Storage of energy reserves (Adipose cells—AKA fat cells) • Defense

  5. Figure 4.8

  6. Connective Tissue Proper • Cell Types • Fibroblasts • Most abundant • Produce and maintain connective tissue • Macrophages • Engulf damaged cells and wastes • Adipocytes • Fat cells • Mast Cells • Release chemicals to start immune response

  7. Connective Tissue Fibers • Collagen Fibers • Strong and flexible • Elastic Fibers • Will stretch • Reticular Fibers • Thin

  8. Ground Substance • Fills in space between cells • Slows bacteria and pathogens

  9. Figure 4.8

  10. Marfan’s Syndrome • Genetic • Abnormal fibrillin—gives connective tissue strength and elasticity • Tall with abnormally long arms, legs and fingers • Abnormal cardiovascular system • Weak aorta—may burst • Sudden, fatal loss of blood

  11. Loose Connective Tissue • Areolar Tissue • Least specialized • Increased blood supply • Separates skin from muscle • Pads • Allows movement • Supplies blood to epithelia

  12. Figure 4.9a

  13. Adipose Tissue • AKA: Fat • Loose Connective Tissue • Padding • Shock absorption • Insulation • Energy reserve • Collects in sides, buttocks, breasts and abdomen

  14. Figure 4.9b

  15. Weight Control • Weight loss = deflated adipocytes • Easily regain these cells b/c the cells are still there • Liposuction—remove adipocytes

  16. Dense Connective Tissue • Mostly collagen • Tendons—attach muscles to bone • Ligaments—attach bone to bone

  17. Figure 4.9c

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