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Connective tissue
| Term | Definition |
|---|---|
| Connective tissue components | 1) specialized cells 2) extracellular matrix (protein fibers or fluid phase (ground substance)) |
| Functions | 1) structural framework 2) fluid and solute transport 3) physical protection 4) tissue interconnection 5) fat storage 6) microrganism defense |
| 3 classfications of connective tissue | 1) connective tissue proper - loose : aereolar -dense: tendons / ligaments 2) fluid connective tissue -blood : blood cells 3) supporting connective tissue - bone : compact bone |
| Connective tissue proper | Contains varied cell populations and fiber types surrounded by a syrupy ground substance |
| Fibroblasts | make fibers |
| Macrophages | large eaters |
| fat cells | adipose |
| mast cells | aid in defense |
| other white cells | phagocytes |
| collagen fibers | provides toughness |
| Reticular fibers | supports cells |
| elastic fibers | provides resilience |
| Areolar tissue | cushion support protection - beneath skin digestive, respiratory and urinary tract between muscles around blood vessels, nerves, and joints |
| Adipose | padding, cushion shocks, insulation, energy storage - beneath skin, surrounding organs, buttocks and breast |
| dense connective tissues | firm attatchment for muscles, bones - between skeletal muscle and bone between bones covering skeletal muscles and some organs |
| Fluid connective tissues | cells + a liquid ground substance Blood RBCs, WBCs, platelets + plasma Lymph Lymphocytes + lymph fluid |
| Cartilage characteristics | -avascular -covered by a fibrous perichondrium |
| Hyaline cartilage | flexible support, reduce friction between bones at joints, larynx, trachea, bronchi, nasal septum MOST COMMON |
| Elastic cartilage | support with flexibility ear epiglottis : covers windpipe when you swallow acoustic canal |
| Fibrocartilage | resists compression, prevents bone to bone contact between vertebrae between pubic bones knee padding |
| Bone (osseous tissue) characteristics | Matrix provides unique properties Collagen fibers resist bending Calcium salts resist compression Diffusion through canaliculi nourishes osteocytes Covered by periosteum |
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