Physiologic response to subgravity. II. Initiation of micturition.

T HE development of rocket .boosters and fuels c,~pable of high orbital payloads, including manned space probes, has drawn attention to the immediate application of biologic studies in the weightless state. The meager evidence available from the dog in Sputnik II encourages us to believe that the 'human organism can endure zero gravity, but complications may arise from prolonged exposure. Attention has been directed to a number of basle and vital physiologic functions and the possible effect of weightlessness on these mechanisms. T'he present experiment was concerned with the elimination of ,liquid body wastes in the null-cavity state.