Human physiology is the science of the mechanical, physical, and biochemical functions of humans in good health, their organs, and the cells of which they are composed. The principal level of focus of physiology is at the level of organs and systems. Most aspects of human physiology are closely homologous to corresponding aspects of animal physiology, and animal experimentation has provided much of the foundation of physiological knowledge. Anatomy and physiology are closely related fields of study: anatomy, the study of form, and physiology, the study of function, are intrinsically tied and are studied in tandem as part of a medical curriculum.
Volcano Corporation, a leading developer and manufacturer of precision intravascular therapy guidance tools designed to enhance the diagnosis and treatment of coronary and peripheral vascular disease, said today that revenues in the second quarter of 2010 increased 36 percent versus revenues in the second quarter of 2009.
Researchers have discovered a novel mechanism in Salmonella that affects its virulence and its susceptibility to antibiotics by changing its production of proteins in a previously unheard of manner. This allows Salmonella to selectively change its levels of certain proteins to respond to inhospitable conditions.
Thermo Fisher Scientific Inc., the world leader in serving science, today announced the Thermo Scientific Nunc Edge 96-well Plates for cell-based assays.
Curemark, LLC , a drug research and development company focused on the treatment of neurological diseases, announced that Saint Peter's University Hospital in New Brunswick, New Jersey, is participating in the company's Phase III clinical trials for CM-AT, Curemark's autism treatment.
Half of U.S. first-year medical students are female, yet a new UCLA study shows that they volunteer for leadership roles in the classroom significantly less than their male counterparts. Subtle encouragement from teachers, however, can even out the playing field by boosting female students' willingness to identify themselves as leaders.
By deciphering the genetics in humans and fish, scientists now believe that the neck - that little body part between your head and shoulders - gave humans so much freedom of movement that it played a surprising and major role in the evolution of the human brain, according to New York University and Cornell University neuroscientists in the online journal Nature Communications (July 27, 2010.)
With a single stimulatory molecule, human insulin-producing beta cell replication can be sustained for at least four weeks in a mouse model of diabetes, according to researchers at the University of Pittsburgh School of Medicine in Diabetes, a journal of the American Diabetes Association.
Over the next five years, a diverse, multi-disciplinary team of researchers led by Dr. Kerry Courneya of the University of Alberta and Dr. Christine Friedenreich of Alberta Health Services will conduct a series of five large research projects to probe the impacts of physical activity on breast cancer thanks to a $2.5 million team grant over five years from the Canadian Institutes of Health Research (CIHR).
University of Pennsylvania School of Medicine researchers have described a previously unknown biological mechanism in cells that prevents them from cannibalizing themselves for fuel. The mechanism involves the fuel used by cells under normal conditions and relies on an ongoing transfer of calcium between two cell components via an ion channel. Without this transfer, cells start consuming themselves as a way of to get enough energy.
The latest Perspectives in General Physiology series introduces the newest technologies in the field of calcium signaling, which plays a central role in many cellular processes. The Perspectives appear in the August issue of the Journal of General Physiology.
When it infects the lungs, the Legionnaire's bacterium Legionella pneumophila causes acute pneumonia. The pathogen's modus operandi is particularly ingenious: it infiltrates deliberately into cells of the human immune system and injects a host of proteins which then interfere in the normal cellular processes. Scientists from the Max Planck Institute of Molecular Physiology in Dortmund have now discovered how Legionella reprogrammes the cells to ensure its own survival and to propagate. They examined a protein used by the pathogen to divert the material transport within the cells for its own purposes.
Oregon Health & Science University Knight Cancer Institute researchers found that the GRB7 gene drives an aggressive form of breast cancer and acts independently of the HER-2 gene, known to be a stimulator of breast cancer growth. Isolating the role of this gene could ultimately help fine-tune a patient's treatment and enable physicians to provide a more accurate prognosis.
A large academic study has demonstrated structural changes in specific brain regions in female patients with irritable bowel syndrome, a condition that causes pain and discomfort in the abdomen, along with diarrhea, constipation or both
Researchers led by Columbia University Medical Center have discovered that the skeleton plays an important role in regulating blood sugar and have further illuminated how bone controls this process. The finding, published in Cell, is important because it may lead to more targeted drugs for type 2 diabetes.
New research, published in the journal Development, by Dr. Anthony-Samuel LaMantia, professor of Pharmacology & Physiology and director of the newly formed GW Institute for Neuroscience, and his colleagues have identified the stem cells that generate three critical classes of nerve cells - olfactory receptors, vomeronasal and gonadotropin releasing hormone neurons - that are responsible for enabling animals and humans, to eat, interact socially and reproduce.
Specialized brain training targeted at the regions of a rat's brain that process sound reversed many aspects of normal, age-related cognitive decline and improved the health of the brain cells, according to a new study from researchers at University of California, San Francisco.
Research at the University of Arkansas took a step toward understanding hypertension in women by using a new technique to examine the release of a neurotransmitter in small blood vessels.
Down syndrome is a well known cause of mental retardation and other medical problems, including early onset of Alzheimer disease. It has long been known that Down syndrome is associated with an individual having an additional copy of chromosome 21. Research findings reported in the July 18 advanced online publication of Nature Neuroscience have narrowed down the critical genetic elements responsible for some aspects of Down syndrome.
Adolescents of ages between 12 and 17, with a good physical condition and regular physical activity present increased levels of insulin and leptin, which are hormones involved in the development of diabetes, appetite control and energy expenditure. This was the conclusion drawn from a study recently conducted at the Department of Physiology of the University of Granada. Further, after thorough analysis of a number of scientific studies, they also concluded that physical activity and physical condition are negatively associated to adolescents' body fat.
Can elderly Latinos who have limited mobility and face elevated risks of disability dance their way to better health? A University of Illinois at Chicago researcher wants to find out.
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