Accession Number : AD0715507

Title :   Homestatsis in Weightlessness (Gomeostaz v Usloviyakh Nevesomosti),

Corporate Author : SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TEX

Personal Author(s) : Egorov,B. B.

Report Date : 1970

Pagination or Media Count : 12

Abstract : A long exposure to weightlessness is accompanied by a 'readjustment' of a number of physiological processes due to disruption of reflexes from the muscles which support activity in the presence of gravity. At the same time, the activity of the muscles of the extremities, a powerful mechanism of extracardial regulation, is changed. The disappearance of hydrostatic pressure in weightlessness is accompanied by redistribution of the blood in the body and by a decrease in the mass of circulating blood. The sharp imbalance between the level of the circulating blood mass, necessary to support the main processes of metabolism, and the mass of circulating blood, stable for conditions of weightlessness, causes periodic and regularly alternating phenomena of polyurea and water retention. This phenomenon is accompanied by a distruption of the electrolyte balance in the body. (Author)

Descriptors :   (*WEIGHTLESSNESS, ACCLIMATIZATION), ADAPTATION(PHYSIOLOGY), PHYSIOLOGY, STRESS(PHYSIOLOGY), BLOOD CIRCULATION, BRAIN, MUSCLES, MUSCULOSKELETAL SYSTEM, MOTOR REACTIONS, PERCEPTION, CARDIOVASCULAR SYSTEM, NERVOUS SYSTEM, EXTREMITIES, BLOOD CIRCULATION, METABOLISM, ELECTROLYTES(PHYSIOLOGY), WEST GERMANY

Subject Categories : Stress Physiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE