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KMID : 0381920090390040365
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Korean Journal of Microscopy
2009 Volume.39 No. 4 p.365 ~ p.371
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Morphological Changes of Pre-Astronaut’s Hair During Spaceflight Training
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Lee Weon-Kun
Chang Byung-Soo
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Abstract
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This study was investigated to observe morphological changes of two pre-astronauts’ hair, male and female by electron microscopy and to analyze its tensile strength by using rheometer. The surface of those two pre-astronauts’ hair, which were very rough and irregular, contained separated scales and destroyed remnants of cuticular cells. Also, there were many holes on the cytoplasm of the cuticular cells which forms the cuticle layer. The destruction begins when the endocuticle where the holes form gets destroyed. And then, The tensile strength of female pre-astronaut’s hair was 14.60 mm which is 10% reduced, compared to that of the normal healthy hair. Thus, this result thought to be due to the prolonged change of the biorhythm and psychological instability of the pre-astronauts.
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KEYWORD
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Aerospace medicine, Astronaut, Microgravity, Hair, Tensile strength
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