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Central Nervous System Peripheral Nervous System
1,688 words... ws the cross-bridge to detach and re-attach to another active site on an actin molecule. This contraction cycle is repeated as long as free calcium is available to bind the troponin and ATP is available to provide the energy. The signal to stop contraction is the absence of the nerve impulse at the neuromuscular junction. When this occurs, an energy requiring calcium pump located within the sarcoplasmic reticulum begins to move the calcium back into the sarcoplasmic reticulum. This removal o...
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White Blood Cells Connective Tissue
3,064 words... site Connective tissues have three main elements: ground substance, fibers, & cells. Ground substances make up the extracellular matrix. (Note: that the term matrix indicates the ground substance. ) Ground Substance - is an amorphous (unstructured) material that fills the space between the cells & contains the fibers. It is composed of interstitial fluid, cell adhesion proteins, & proteoglycans. Cell adhesion proteins, a group that includes fibronectin & lamina, sever mainly as a connective ...
Free research essays on topics related to: connective tissue, elastic fibers, skeletal muscle, white blood cells, scar tissue -
Asbestos Containing Material Professional Asbestos Contractor Fibers
2,135 wordsThe aim of this paper is to respond to some frequently asked questions about asbestos and to provide information to help people make informed decisions about its care and maintenance. Asbestos is the name for a group of naturally occurring minerals that separate into strong, very fine fibers. The fibers are heat-resistant and extremely durable, and, because of these qualities, asbestos has become very useful in construction and industry. In the home it may or may not pose a health hazard to the ...
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Fiber Optic Cable Fiber Optics
4,355 wordsOur current age of technology is the result of many brilliant inventions and discoveries, but it is our ability to transmit information, and the media we use to do it, that is perhaps most responsible for its evolution. Progressing from the copper wire of a century ago to todays fiber optic cable, our increasing ability to transmit more information, more quickly and over longer distances has expanded the boundaries of our technological development in all areas. Todays low-loss glass fiber optic ...
Free research essays on topics related to: fiber optic cable, mode fiber, copper wire, coaxial cable, fiber optics -
Fibre Optic Endoscopes Fibre Optic Endoscopy Fiber
4,917 wordsFiber optics produced by special methods from silica glass and quartz which replaced copper wire is very useful in telecommunications, long distance telephone lines and in examining internal parts of the body (endoscopy). Equipment for photography is available with all current fiber-optic endoscopes. Through a process known as total internal reflection, light rays beamed into the fiber can propagate within the core for great distances with remarkably little attenuation or reduction in intensity....
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Fiber Optics Mode Fiber
4,129 wordsSome of Fiber Optics Thesis: Some of the important features of the fiber optics that we are interested are discussed below. Now a days we are using copper wires as they are the most cost effective and reliable interconnect in parallel machines. However as machines grow more powerful, wire density becomes critical making fiber possible alternatives because of their small wire size. Fiber optics are used mainly to use effectively its high bandwidth. On a single fiber lots of information / data can...
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Red Blood Cells Pulmonary Artery
6,589 wordsForwards and backwards to the right and are at the same level of the fifth to eight dorsal vertebrae. The apex of the heart points downwards and forwards to the left and corresponds to the space between the fifth and sixth ribs. However, in thin people, the hearts apex may be pointing more downwards than to the left. Its atrial border corresponds to a line drawn across the sternum on a level with the upper border of the third costal cartilage. Its apex corresponds to a line drawn across the lowe...
Free research essays on topics related to: vena cava, pulmonary artery, mitral valve, coronary arteries, red blood cells
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