BIOL 2312 Chapter Notes - Chapter 42.3-42.7: Central Nervous System, Endocrine System, Neuroglia
17 Jan 2017
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All connective tissue is defined by having a matrix. Ground substance-fluid between cells and fibers containing polysaccharides and protein. Cells scattered in a matrix that has a lot of ground substance. Gelatinous material gains it strength from collagen protein fibers. When needed for energy, the adipose cell hydrolyzes the triglycerides and secrete fatty acids into blood for oxidation. Adipose cells do not divide, just grow or shrink. Less ground substance-- densely packed collagen fibers make it stronger. Unique cells matrices to perform a specialized function book notes page 1. Unique cells matrices to perform a specialized function. Ground substance forms glycoprotein, chondroitin, and collagen laid in parallel structures. Firm and flexibles but does not stretch-- great tensile strength. Osteocytes still alive even in hardened extracellular matrix of crystals of calcium phosphate. Arranged into sheet of long, spindle shaped cells each with a nucleus. Contraction occurs when a cell is stimulated by a nerve then the sheet contracts as a whole.
