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Connective tissue 4
chp 4
| Question | Answer |
|---|---|
| Function of connective tissues | Binds, supports, protects, fill spaces, store fat, produces blood cells |
| Location of connective tissues | throughout the body |
| Main characteristics of connective tissue | excellent blood supply, cells are farther apart with matrix in between |
| Loose Connective Tissue (areolar tissue) | holds tissue fluids, binds organs together |
| Dense Connective Tissue | binds organs together |
| Bone | supports, protects, provides framework |
| Adipose Tissue | protects, insulate, stores fat |
| Cartilage (hyaline, elastic, fibrocartilage) | support, protects, provides, absorbs chock, framework and attachment |
| Blood | transports substances, helps maintain stable internal environment |
| Connective tissue proper | `tissues with many types of cells and extracellular fluid. |
| Fluid Connective tissue | have distinctive populations of cells suspended in a watery matrix that contains dissolved proteins. |
| Supporting connective tissues | have less cell population and a matrix containing much more densely packed fibers. (cartiledge and bone) |
| calcified | contains mineral deposits like calcium. |
| Connective tissue proper contains: | fibroblasts, macrophages, adipocytes, mesenchymal cells, melanocytes, mast cells, lymphocytes, and microphages. |
| Fibroblasts | secrete hyaluronan (a polysaccharide derivative) and proteins that act as a viscous ground substance. |
| Macrophages | fixed or free, large ameboid cells scattered throughout the matrix that engulf pathogens or damaged cells that enter the tissue. |
| adipocyte | fat cells that contain single enormous lipid droplet. |
| mesenchymal cells | stem cells that respond to local infection or injury by dividing or producing 2 daughter cells. |
| Melanocytes | Produce brown pigment called Melanin. |
| Mast cells | small, mobile connective tissue cells that are common near blood vessels. Contain histamine and heparin to stimulate local inflamation to infection. |
| Lymphocytes | travel throughout the body and develop into plasma cells to produce antibodies |
| antibodies | proteins involved in defending the body against a disease. |
| Microphages | phagocytic cells that move normally through connective tissues in small numbers. Are attracted to chemicals released by mast cells and macrophages after an infection. |
| Connective tissue fibers | collagen, reticular, elastic |
| collagen fibers | most common long, straight, and unbranched. Consists of bundle of fibrous protein subunits like a rope flexible but stronger. |
| Reticular fibers | same subunits as collagen fibers interwoven framework. |
| parenchyma | functional cells |
| Elastic fibers | contain elastin. They are unbranched and wavy. |
| Elastic ligaments | interconnect vertebrae. Are dominated by elastic fibers and are rare. |
| Ground substance | fills the spaces between cells and surround connective tissue fibers. |
| Embryonic Connective tissues | Mesenchyme |
| Mesenchyme | first connective tissue to appear in a developing embryo. Gives rise to other connective tissues. Star shaped stems separated by a matrix with very fine protein filaments. |
| Loose Connective tissues | "packing materials" fill spaces between organs and support epithelia. Include mucuous connective tissue in embryos and areolar tissue, adipose tissue, and reticular in adults. |
| Areolar Tissue | open framework, whose fibers are loosely organized. |
| adipose tissue | fat tissue |
| white fat | name of adipose tissue because of pale, yellow-white color. |
Created by:
sweetnance
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