1Connective Tissue (Chapter 6, pages 146 – 181) 1. Functions a. Maintain body form b. Bind c. Support d. Anchors e. Protection: cells of the immune system; phagocytic cells f. Blood Formation g. Tissue repair and development 2. Three fundamental components of connective tissue: a. Connective tissue cells b. Extracellular fibers c. Ground substance 3. Extracellular matrix: fibers + ground substance + tissue fluid; matrix determines mechanical properties of tissue 4. Embryonic origin of connective tissue: mesenchymal tissue is derived from embryonic mesoderm except head mesenchyme which is derived from neural crest (ectoderm). Figure 6.2, page 148. 5. Classification and Types of Connective Tissue a. Classification Embryonic CT Mesenchymal CT Mucous CT Adult CT CT proper Loose or Areolar CT Dense CT Dense irregular CT Dense regular CT Specialized CT Reticular CT Elastic CT Adipose CT (Chapter 9)
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Pigmented CT Cartilage (Chapter 7) Bone (Chapter 8) Blood and Lymph (Chapter 10) b. Types of connective tissue (description) (1) Mesenchymal connective tissue: precursor of all adult CT; consists of loose array of stellate, mesenchymal cells with large intercellular spaces filled with ground substance (2) Mucous connective tissue: embryonic tissue found in Wharton's jelly; cushions; cells include mesenchymal cells and fibroblasts; few fibers (mostly collagen) 2