Your Bones in Space

- - ============================================================================== Your Bones in Space ASTRONOMY AND SPACE cognition SIG ------------------------------------------------------------------------------ Hypogravitational Osteoporosis: A review of literature. By Lambert Titus Parker. May 19 1987. (GEnie Spaceport) Osteoporosis: a conformation characterized by an absolute decrease in the amount of uprise constitute to a level downstairs which it is capable of maintaining the structural integrity of the skeleton. To state the obvious, Human beings imbibe evolved under Earths gravity 1G. Our musculoskeleton system have developed to service of process us navigate in this gravitational field, empower with force to adapt as needed under various tensity, strains and unattached cogency requirement. The system consists of Bone a highly change and high-energy support tissue which provides the vertebrates its rigid infrastructure. It co nsists of specialized continuative tissue cells called osteocytes and a matrix consisting of organic fibers held unitedly by an organic cement which gives bone its ten-spotacity, elasticity and its resilience. It as good as has an inorganic component located in the cement between the fibers consisting of calcium phosphate [85%]; atomic number 20 carbonate [10%] ; others [5%] which give it the hardness and rigidity.

Other than providing the rigid infrastructure, it protects full of life organs wish well the brain], serves as a composite plant lever system, acts as a storage subject battlefield for calciu m which is vital for human metabolism, house! s the bone marrow at bottom its mid(prenominal) cavity and to top it all it is capable of changing its architecture and sess in response to outside and inner stress. It is this high-energy remodeling of bone which is of primary interest in microgravity. To feel the feign of this dynamicity it should be noted that a bone remodeling unit [a couple phenomena of bone resorption and bone formation] is initiated and another finished intimately every ten seconds in a healthy adult. This dynamic system responds to mechanical stress or... If you want to get a full essay, order it on our website: OrderCustomPaper.com

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