Features of Crassulacean Acid Metabolism plants are presented. Investigations of a complex eco-physiological plant adaptation to the problems of growth in an arid environment are discussed. Materials and procedures for these investigations are described. (CW)

Bladder and bowel dysfunction is a common problem for children with myelomeningocele and related spinal-cord defects. The chronic medical and social effects of this problem necessitate a multifaceted and multidisciplinary approach. Reviewed are bladder and bowel anatomy and physiology, developmental concerns, treatment techniques, and psychosocial…

A study of 61 high school biology students found that Interactive Video Disk (IVD) simulation was as effective as actual frog dissection in promoting student learning of frog anatomy and dissection procedures. When used as a preparation for dissection, IVD simulation helped students perform better dissections and learn more from doing dissections.…

Described is a high-resolution, interactive 3-D atlas of human/animal anatomy that students will use to learn the structure of the body and to understand their own bodies in health and disease. This system can be used to reinforce cadaver study or to serve as a substitute for institutions where it is not practical to use cadavers. (KR)

This paper on physiologic correlates of speech production in children and youth with hearing impairments focuses specifically on the production of phonemes and includes data on respiration for speech production, phonation, speech aerodynamics, articulation, and acoustic analyses of speech by hearing-impaired persons. (Author/DB)

The Perfect Eye model simplifies solutions to a wide variety of optometry instructional problems by facilitating student understanding of the interaction among lenses, objects, accommodation, and ametropia. The model is based on the premise that inside every eye is a perfect (emmetropic) eye, and that the physiological eye is a combination of the…

Reports on a study that examined the prior use of simulation on frog dissection in improving students' actual dissection performance and learning of frog anatomy and morphology. Finds that students who performed the simulation before dissection performed significantly better than students who performed dissection before using the simulation or…

Describes an activity for primary students on bees. Demonstrates life in a beehive using students playing bees. Reports the effects of this activity on student learning. (YDS)

The Research Assessment Exercise (RAE) graded research output of academic departments in the United Kingdom. A citation study of anatomy, genetics, and archaeology articles (1988-1992) found a relationship between the total number of citations received, or average number of citations per faculty member, and the RAE score, suggesting that citation…

This article reviews competing theories of semantic organization in the brain, including modular models, unitary models, and the matrix theory, and provides supporting and refuting evidence for each, incorporating examples from the imaging literature. The literature does provide some support for distinct neural substrates that process specific…

Students received a personalized or nonpersonalized version of a narrated animation explaining how the human respiratory system works. The narration for the nonpersonalized version was in formal style, whereas the narration for the personalized version was in conversational style in which "the" was changed to "your" in 12 places. In 3 experiments,…

The authors examined the effectiveness of self-regulated learning (SRL) training in facilitating college students' learning with hypermedia. Undergraduate students (N = 131) were randomly assigned to either a training condition or a control condition and used a hypermedia environment to learn about the circulatory system. Students in the SRL group…

General movements (GMs) are part of the spontaneous movement repertoire and are present from early fetal life onwards until the end of the first half a year of life. GMs are complex, occur frequently, and last long enough to be observed properly. They involve the whole body in a variable sequence of arm, leg, neck, and trunk movements. They wax…

Introductory biology laboratory experiences frequently rely on preserved chordates for anatomical study. Unfortunately, these preserved organisms rarely reflect the appearance of a living creature. Since community colleges are generally prohibited the use of live chordates, this paper describes the autopsy of a "road kill" squirrel to facilitate…

The role of inositol 1, 4, 5-trisphosphate receptors (IP3Rs) in long-term potentiation (LTP) and long-term depression (LTD) was studied in CA1 neurons in guinea pig hippocampal slices. In standard solution, short tetanic stimulation consisting of 15 pulses at 100 Hz induced LTP, while three short trains of low-frequency stimulation (LFS; 200…