Page 75 - (DK) Danger! Open with Extreme Caution!
P. 75

BODY SCAN RESULTS






                                                                                  Heart
              Brain
              You’ve probably noticed that                                        In space, there’s no gravity,
              you are feeling a little dizzy                                      so the fluids in your body
              and off balance. That’s                                             go in all directions. That’s
              because the receptors in your                                       the reason for your puffy
              body got scrambled when you                                         face and blocked nose,
              first started living in                                             the cause of your “space
              microgravity. Space adaption                                        sniffles.” More seriously,
              syndrome (SAS) will have                                            your blood plasma has
              affected you in lots of other                                       dropped by 20 percent
              small ways, too—no wonder                                           and your heart has begun
              it’s sometimes called “space                                        to shrink. Regular exercise
              scurvy.” Your brain scan                                            will cut down the time it
              looks fine, but if you feel any                                     takes to recover when you
              symptoms of SAS again, avoid                                        return to Earth.
              going on any space walks!





















                                                                              Bones
              Muscles
              In orbit, your muscles don’t                                    After three months, you’ve lost
              have to fight gravity, so you’ve                                six percent of your bone density.
              already lost 20 percent of                                      We can see this from the high
              your muscle density. Exercise                                   calcium levels elsewhere in your
              alone won’t solve the problem,                                  body, which can lead to kidney
              but hormone pills and gene                                      problems. On a two-year
              therapy can help your muscles                                   mission, your bones could
              grow. Be warned: after                                          become very weak. You may
              a 211-day flight on Salyut 7                                    even lose a few teeth. Taking
              in 1983, cosmonauts Anatoli                                     vitamin D and K pills and
              Berezovoy and Valentin Lebedev                                  undergoing UV light therapy
              could barely walk for a week                                    can help in the short term.
              after returning to Earth.















                                                                                         LIFE IN ORBIT              75
                                           (c) 2011 Dorling Kindersley. All Rights Reserved.
   70   71   72   73   74   75   76   77   78   79   80