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Tissue Definitions
Crash Course Tissues #3
| Question | Answer |
|---|---|
| What is the most abundant tissue type in the body? | Connective |
| What are the types of connective tissue? | Connective tissue proper, blood, bones, & cartilage |
| What are the jobs of connective tissues? | Binding & support, protection, insulation, storing reserve fluid and energy, transporting substances within the body, and movement |
| What 3 factors do all connective tissues have in common?. | They all develop from mesenchyme, have different degrees of vascularity (blood flow), and are mostly composed of non living material |
| Mesenchyme definition | A loose and fluid type of embryonic tissue |
| Extracellular matrix definition | An intricate network of an array of multifunction macromolecules organized in a cell/tissue specific manner |
| Ground substance definition | A watery, rubbery, unstructured material that fills spaces between cells and protects the cells from their surroundings (jello) |
| Proteoglycan definition | A compound consisting of a protein bonded to a glycosaminoglycan |
| Glycosaminoglycans | Long linear polysaccharides |
| Fibers definition | Provide support & structure to the otherwise shapeless ground substance |
| Collagen fibers | The strongest and most abundant type of fiber in the body |
| Elastic fibers | Longer, thinner, and form a branching framework within the matrix. Made of elastin which allows them to stretch and cool like rubber bands |
| Reticular fibers | Short, finer, collagen fibers with an extra coating of glycoprotein. These fibers form delicate, sponge-like networks that cradle and support your organs like fuzzy nets |
| Immature connective tissue | (Always end in the suffix "blast") Blast means forming. Their job is to secrete the ground substances and fiber that forms its unique Matrix |
| Chondroblasts | Blast cells of cartilage (found in nose, ears, & joints) |
| Osteoblasts | Blast cells of bones (create calcium carbonate that forms bones. It then settles into a less active, more mature phase |
| Mature connective tissue | (Always end in the suffix “cyte”) the second stage of a "blast" cell. Although it doesn’t have to be the final stage, because if a cyte cell needs to be repaired, it can revert to a blast cell and turn back once it’s fixed |
| Macrophages definition | Big, "hungry," cells that patrol your connective tissues & eat bacteria, Foreign materials, and even your own dead cells |
| Leukocytes definition | (White blood cells) they scour your circulatory system fighting off Infection |
Created by:
kresidori29
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