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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 - PowerPoint PPT Presentation
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Chapter 4.3: Tissues
Most diverse Never exposed to outside Vascular—have blood vessels Receptors for pain, pressure and
temperature
Connective Tissues
Figure 4.7
Support/Protection Transportation Storage of energy reserves (Adipose cells—
AKA fat cells) Defense
Functions of Connective Tissue
Figure 4.8
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
Connective Tissue Proper
Collagen Fibers Strong and flexible Elastic Fibers Will stretch Reticular Fibers Thin
Connective Tissue Fibers
Fills in space between cells Slows bacteria and pathogens
Ground Substance
Figure 4.8
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
Marfan’s Syndrome
Areolar Tissue Least specialized Increased blood supply Separates skin from muscle Pads Allows movement Supplies blood to epithelia
Loose Connective Tissue
Figure 4.9a
AKA: Fat Loose Connective Tissue Padding Shock absorption Insulation Energy reserve Collects in sides, buttocks, breasts and
abdomen
Adipose Tissue
Figure 4.9b
Weight loss = deflated adipocytes Easily regain these cells b/c the cells are
still there Liposuction—remove adipocytes
Weight Control
Mostly collagen Tendons—attach muscles to bone Ligaments—attach bone to bone
Dense Connective Tissue
Figure 4.9c