BIOL130 Lecture Notes - Lecture 11: Cell Wall, Ultimate Tensile Strength, Osmotic Concentration
7 Apr 2017
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Unit 11: cell communities: tissues, stem cells, and cancer. Most of the cells in multicellular organisms are organized into cooperative assemblies called tissues (nervous, muscle, epithelial, connective). Tissues composed not only of cells, with their internal framework of cytoskeletal filaments, but also of extracellular matrix, which cells secrete around themselves; it is this matrix that gives supportive tissues such as bone or wood their strength. The matrix provides one way to bind cells together, but cells can also attach to one another directly. An animal tissue requires blood vessels, nerves, and other components formed from a variety of specialized cell types. Plants and animal"s tissues are constructed on different principles. Animals prey on other living things so they must be strong and possess tissues capable of rapid movement. The cells that form this tissues must be able to generate and transmit forces and to change shape quickly.
