Biomaterials are substances or combinations of substances that can be used in a system that treats, augments, or replaces any tissue, organ, or body function. The nature and role of these substances, particularly in the cadiovascular system, are discussed. (JN)

Discusses the role of dogs in research, considering their use in studies related to: behavior; aging; anesthesia; gastrointestinal surgery; the brain; organ transplants; radiobiology; trauma and shock; arterial diseases; hemophelia; ophthalmology; diabetes; nutrition; cancer; lupus; cyclic neutropenia; thyroiditis; hepatitis; skeletal system,…

Reviews and discusses current information on the human renal response as related to beta-blockers (antihypertension agents). Topic areas considered include cardioselectivity, renal hemodynamics, systemic hemodynamics, changes with acute and chronic administration, influence of dose, and others. Implications and an 11-item multiple-choice self-quiz…

Discusses major uses of rats as experimental animals for studying health concerns, pointing out that their size, gestation, and histocompatibility make them useful in various studies. Topic areas addressed include aging, autoimmune disease, genetics, cancer, diabetes, hypertension, infection, reproduction, and behavior. (DH)

Discusses recent advances in the understanding of the photoreceptor function. Phototransduction, photoreceptor syncitium, and the signal at the synapse are among the topic areas addressed. (DH)

Functional gain and word recognition were assessed for nine hearing-impaired elementary children under two conditions of FM amplification: FM auditory trainer with insert earphone and personal FM system with miniloop. On the average, the insert-earphone auditory trainer system provided slightly greater functional gain. For eight Ss, word…

Puretone auditory assessment of 21 adults with severe to profound mental retardation indicated that a bivariate plotting procedure of predicting hearing sensitivity from the acoustic reflexes should be included in an audiological test battery for this population. (CL)

Describes a laboratory exercise which demonstrates qualitatively the specificity of the transport mechanism, including a consideration of the competitive inhibition, and the role of adenosine triphosphate (ATP) in active transport. The exercise, which can be completed in two to three hours by groups of four students, consistently produces reliable…

Examines the two-finger extension as a hand shape in sign language by analyzing data on 10 different sign languages. The analysis shows that a theory of marking can be developed for sign languages along the same lines as those used for spoken languages--only the particular physiology is different. (SED)

Reviews research on the relationship of nutrition to the aging process. Extension of life-span, retardation of age-related physiological deterioration, retardation of age-related disease processes, and the four major hypotheses dominating thought about the mechanisms by which food restriction slows the aging process are discussed. (JN)

Relates alterations in respiratory system functions occurring with aging to changes in respiratory system structure during the course of life. Main alterations noted include loss of alveolar elastic recoil, alteration in chest wall structure and decreased respiratory muscle strength, and loss of surface area and changes in pulmonary circulation.…

This paper discusses the use of genital measures in the study of both applied and basic work in human sexuality. Some of the advantages of psychophysiological measures are considered along with cautions concerning unwarranted assumptions. Some of the advances that are possible in both applied and basic work are examined. (Author)

This study determined the maximal mean values for concentric and eccentric back-lift strength as well as isometric, and examined and compared the relationships between the mean peak voltage of the erectores spinae muscle(s) and maximal force exerted for the three types of muscle contractions. (RC)

The results of this study indicated that an endurance training program can be implemented effectively in an entire school system and that the change in fitness can be expected to be significant. (RC)

Reported are effects of an 8-week running program on the cardiorespiratory fitness of normal 10- to 12-year-old males. (GW)