The renin-angiotensin system (RAS) maintains salt and water balance. Discusses functions of the RAS as defined in mammalian species, considering how the system arose and what its original function was. Also discusses where some of the changes occurred in the system (and why) as well as other topics. (JN)

The sound /s/ is a problem for hearing-impaired children because most ear-level hearing aids and earmolds are not efficient in amplifying and transmitting high-frequency acoustic energy. With appropriate wideband hearing aids and wideband earmolds, fricatives such as /s/ should be audible to children with even a severe hearing loss. (Author/CL)

Although breathing is a universal activity among physicists (and others), few have bothered to estimate the number of molecules inhaled in a single average breath. Some simple calculations and comparisons related to this phenomenon are provided to improve students' appreciation of the awesome numbers related to Avogadro's number. (JN)

This study focuses upon the relationship between phase of the menstrual cycle and sexual arousability. Women (N=133) participated in an experiment that induced sexual arousal by means of an erotic story. Independent factors were use of contraceptive pills versus no contraceptive pills and phase of the menstrual cycle. (Author)

This paper shows that simple cardiovascular training can reduce the composition of body fat in college women. (RC)

Running performance and metabolic variables were evaluated in 28 college males during the period of a 10-week cross-country activity class. (RC)

This publication presents general guidelines for exercise prescription that have an anatomical basis but also consider the exerciser's ability to do the exercise correctly. It reviews various common questionable exercises, explaining how some exercises, especially those designed for flexibility and muscle fitness, can cause harm. Safer…

This textbook is a course in anatomy, physiology, and hygiene for high schools and advanced classes in common schools. The book complies with many states' law requiring lessons on the nature of alcoholic drinks and narcotics, and their effects.

In this paper, the author attempted to outline a program, aimed at the middle and junior high school student, which would inform students of the extent, type and variation of physiological changes of early adolescence in order to relieve anxiety and augment self-acceptance through assurance. (Author/RK)

The data on approach to snakes provides srong support for the contention that the behavorial avoidance test is not immune to bias introduced by the operation of situational variables that have usually been allowed to vary in uncontrolled fashion in psychotherapy analogue research. Behavior of test subjects can be influenced not only in terms of…

The important place of physical culture and sports within the daily lives of the people is described in this article. The GTO Physical Culture Complex, a set of exercises and activities with precise standards, used as a normative test for school children and adults is given particular attention. (JH)

Conclusion of a continued article. (RL)

Results show that continuous stimulation reduced arousal level both behaviorally and physiologically, that this effect occurred quite rapidly, and that it endured relatively unchanged over time. (Author)