HUMB1000 Lecture Notes - Lecture 2: Adipose Tissue, Elastic Cartilage, Loose Connective Tissue
3 Aug 2018
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Document Summary
Most abundant and widely distributed primary tissue in the body. Composition: cells-produce the extracellular matrix, ground substance-fills the spaces between the cells of the connective tissue, and the space where the fibers are suspended, fibers-collagen, elastic, reticular. Cells of connective tissue: adipose cells-energy and cushioning, fibroblast-secretes fibers and ground substance, mast cells-immunity (detect foreign agents and create inflammatory response, white blood cells-repair injury and fight off infection, macrophages- phagocytose (destroy) foreign molecules. Classes of connective tissue: connective tissue proper- can be dense (regular, irregular and elastic) or loose (areolar, adipose and reticular) The connective tissue that epithelia of skin rests on. Fat beneath the skin, surrounding kidneys, breasts, abdomen and hips. Forms a framework to support free blood cells (white blood cells, mast and macrophage cells) Fibrous coverings surrounding bones, cartilages, muscles and nerves. Ligaments between spinal vertebrate: cartilage, made of cartilage cells within the rigid matrix, avascular and not innervated (thus takes along time to heal)
