BIOL 1215 Lecture Notes - Ground Substance, B Cell, Small Cell

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23 Apr 2013
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Cells and fibers in connective tissues: fibroblasts- large, flat cells with branching processes. Present in several connective tissues, and usually most numerous. Fibroblast migrate through connective tissues, secreting fibers and components of ground substance of extracellular matrix: adipocytes (fat cells)-connective tissues that store triglycerides (fat). Found deep in skin and around organs such as heart and kidneys: mast cells- abundant alongside blood vessels that supply connective tissue. Produce histamine-chemical that dilates small blood vessels and part of inflammatory response, body s reaction to injury or infection. Can also bind to, ingest, and kill bacteria: white blood cells- not found in significant numbers of normal connective tissue. In response to certain conditions they migrate from blood to connective tissues for immune response. Neutrophil- gathers at sites of infection, and eosinophils-migrate to sites of parasitic invasion and allergic responses. 5. macrophages- develop from monocytes (type of white blood cells).

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