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68C Ch.5 Ph.1 T.2
Chapter 5: Greater understanding of Connective Tissues
| Question | Answer |
|---|---|
| Function of Connective tissues.. | Bind structures, provide support, framework, fill spaces, store fat, protect against infections |
| Major connective tissue types (3) | Fibroblasts, Macrophages, Mast cells |
| Fibroblast | Most common fixed cell in connective tissue. Produce fibers by secreting proteins into extracellular matrix |
| Macrophages | Originate as WBC's, specialized to carry on phagocytosis. Function as scavengers |
| Mast cells | Large, widely distributed. Near blood vessels. Release heparin and histamine |
| Connective tissue fibers (3) | Collagenous, Elastic, Reticular |
| Collagenous fibers | thick threads of protein collagen. Flexible but only slightly elastic. Resist pulling forceHold ligaments and tendons together |
| Elastic fibers | Springlike protein called elastin. Easily stretched or deformed. Yellow fibers |
| Reticular fibers | thin collagenous fibers. Lend delicate support |
| Areolar tissue | delicate, thin membranes throughout body. Binds the skin to underlying organs and fills muscles between |
| Adipose tissue | Fat, lies beneath skin, around kidneys, behind eyeballs, certain abdominal membranes |
| Dense connective tissue | thick, collagenous fibers, fine network of elastic fibers. Very strong, withstand pulling forces. Binds body parts in form of tendons and ligaments |
| Cartilage | rigid connective tissue. Provides support, framework, attachments, protects underlying tissues, forms structural models |
| Hyaline Cartilage | very fine collagenous fibers in extracellular matrix. Found on ends of many bones in joints, soft part of nose |
| Elastic Cartilage | dense network of elastic fibers more flexible than hyaline cartilage, larynx |
| Fibrocartilage | Very tough tissue, shock absorber, forms pads inbetween vertebral disc |
| Bone | most rigid connective tissues, due to mineral salts. Supports body structures |
| Blood | Composed of formed elements suspended in blood plasma. Includes RBC's WBC's and platelets. |
| Types of epithelial membranes (3) | Serous membranes, Mucous, Cutaneous |
| Skeletal Muscle Tissue | Voluntary, long, threadlike cells of skeletal muscle. STRIATIONS |
| Smooth Muscle Tissue | No striations, shorter and spindle shaped |
| Cardiac Muscle Tissue | Striated and branched. Single nucleus, involuntary |
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ajwildasin30