Case Study Investigation #6 Imagine that you were lucky to be selected for an in
ID: 3474953 • Letter: C
Question
Case Study Investigation #6
Imagine that you were lucky to be selected for an internship at the National Space Biomedical Research Institute in Houston, Texas. Part of your job is to monitor the health of the astronauts for the National Aeronautics and Space Administration (NASA) before, during and after a space mission. By chance, your time in the lab corresponds with the return of an American astronaut from the International Space Station. She just spent 171 days in the space station and is now getting back to her research studies on earth. Unfortunately, it was discovered that she would have to go through at least 3 weeks of physical therapy. You learned from reading her physical health report that she lost 30% of her skeletal muscle mass. Most of it occurred within the last 2 months of the mission in space. The normal muscle loss during results from disuse, yet she followed all the exercise programs NASA requires. Your job is to assist the research team in investigating her problem. At the end of the chapter, you will be asked to determine the most likely cause of her accelerated loss of muscle mass.
Explanation / Answer
skeletal muscle remain attached to bone by tendon, important for physical activity.
in space there is no gravity and also no excercise or less work causes loss in skeletal musle mass.
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