The use of the earthworm as a laboratory animal for studying the effect of starvation on nitrogen metabolism is discussed. Simple techniques and methods are presented allowing in vivo physiological responses to be compared with changes in the enzyme potential of gut tissue. (Author/MA)

Describes an experiment used to demonstrate the relationship among hypertonic, hypotonic, and isotonic solutions and provides and open-ended research opportunity for additional individual investigation by students. (Author/MA)

Argues that computer-simulated experiments offer educational tools to foster student development of problem-solving skills without traditional laboratory time and expense. The evolution of the medical physiology course at Rush Medical College is used to illustrate trends in this area. They include experiments on PLATO, and on personal computers.…

Describes two quantitatively-oriented physiology laboratories for veterinary students. The laboratory exercises incorporate the procedures of radiology and physical examination with measurement of pulmonary function. Specific laboratory objectives, procedures and equipment needed for diagnoses of the pathologies are listed. (ML)

Describes an inexpensive, easy-to-construct manometric device that is a substitute for an expensive commercial transducer that is sensitive to slight pressure fluctuations. An activity for demonstrating the importance of CO-2 as a humoral regulator of respiration is described. (Author/SA)

Provides background relating cardiorespiratory disease to physical activity. Three laboratory activities are described: pulse response to posture change and quiet activity, pulse response to exercise (mild increasing to strenuous), and ability to extract oxygen. The last includes information on construction of an ergometer. (CS)

Describes a blood coagulation test developed by two high school biology students. Although the test lacks some precision, results indicate that the technique is comparable to standard methods used in laboratories. (MA)

Described are several laboratory investigations that may be used to introduce biochemistry. Topics covered include carbohydrates, lipids, proteins, and metabolism. Reactions, stock solution formulas, and procedures are listed. Emphasized are individualizing work, designing alternative investigations, solving problems, and drawing conclusions. (KR)

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,…

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…

Describes an experiment to characterize the enzyme polyphenol oxidase. Includes Purpose, Reagents and Equipment, Procedure, Extraction, Treatment of Data, and Discussion. (MA)

Describes how a computer simulation is used with a laboratory experiment on the synthesis of urea in isolated hepatocytes. The simulation calculates the amount of urea formed and the amount of ammonium remaining as the concentrations of ornithine, citrulline, argininosuccinate, arginine, and aspartate are altered. (JN)

Presents experiments to introduce students to the phenomenon of biological rhythmicity and to reinforce the fact that there are differences in the physiology of human beings. (Author/MA)

The advantages of using invertebrates in teaching physiological principles are discussed. The ability to illustrate with greater clarity physiological principles, the range and variety of physiological processes available for examination, and the unlimited possibilities for student research are topics of discussion. (KR)

Describes a laboratory experiment designed to give beginning physiology students a successful experience with neurophysiological Techniques and to demonstrate some properties of sensory neurons. Pin electrodes are used to record extracellularly from mechanoreceptors in a cockroach leg. (Author/MA)