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Equilibrium or balance is crucial in every sport or athletic event. ? Maintaining this balance is perhaps more crucial in boarding than in many other sports. ?? It involves being coordinated, that is muscles acting together harmoniously "to bring into or keep a steady condition or position" (World Book dictionary). ? Balance via coordination is pretty much a primary prerequisite for most if not all athletic prowess. equipación real madrid , ? Sports require harmonic function of muscles, whether it be running, jumping, sliding, shooting or hitting a ball, etc. , and boarding is no exception. ? Unless the muscles are instantly ready to respond to nerve impulses to achieve or maintain balance, most of the results will be less than desired. ? The best athletes in my high school class were the ones who seemed to have a special innate or inherited ability to smoothly perform a given athletic move―they were what we used to call "coordinated. "? This ability can be learned, but it may require considerable time and effort.
?To briefly understand the basics of balance, we must first seek to understand the structure and function of the inner ear where not only the organs of balance and equilibrium reside but also the organs of hearing. equipacion real madrid 2012 , ? Altogether, the exterior of the entire organ, present within our skulls, appears almost like a small "snail" in shape with a protruding "head" (with loops attached) projecting from a circular spiral-shaped organ. ? The cochlea, the central portion of the spiral organ, contains the auditory or hearing mechanisms. ? The boney outer organ of equilibrium is called the labyrnth which contains balance elements.
?From the forepart or snail "head" the three projected vertical membranous loops are called semicircular canals; one is horizontal, two are vertical. ?? Each loop or canal is oriented to one of the three basic natural planes and oriented perpendicular to each other? (For example, to describe the three natural planes--a cube or traditional square box has three planes, each oriented in a different direction) and each canal has a lower expansion called the ampulla. ?? Fluid inside the canals is called endolymph. ? When the fluid detects changes in position of your head, it begins to move or flow past the receptor organ, the crista, housed within the ampulla of the semicircular canals. ? The crista contains a mound of sensory hair cells, cupola, and non-sensory cells. ? The two vertical canals have hair cells oriented toward the canal; the horizontal canal hair cells are oriented on the other side. ? When your head assumes a different position, as when doing a skateboard trick, the canals are sensitive not only to direction of rotation, but also to angular acceleration. ? This triggers movement of endolymph which then flows, touching and sensitizing the cupola hair cells which in turn send messages to the cerebellum of the brain (Eckert, R. ? 1978. ? Animal Physiology). ? The brain integrates this information with other sensory input and then sends signals via nerves to activate various organs, mostly muscles, throughout the body to react in a certain manner. ? When there is a new and different rotation of the head, such as the beginning of a fall, the entire equilibrium system is triggered and subsequent muscle activation, as determined by the brain, occurs almost instantaneously, though often too late to prevent the fall. ? In larger chambers beneath the semicircular canals there are three more patches of hair cells, each bearing a mineralized concretion or otolith, having been shown to be concerned with gravitational stimuli and body position (Gordon, M. S. ? 1977. camisetas del real madrid baratas , ? Animal Physiology, Principles and Adaptations)
?Hence, our amazing bodies have the capacity to adapt quickly to changing positions of the head when balance is in jeopardy of being lost. ? This is another poignant reason to protect our vital control center, our heads, with proper helmet protection from any unplanned loss of balance which may result in a serious fall or spill.
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