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.
Obesity is a known risk factor for type II diabetes, heart disease and some forms of cancer. Evidence is now mounting that obesity is also a risk factor for asthma.
Sydney University scientists have proved that salt has a dangerous adrenalin-inducing effect on people suffering from high blood pressure, or 'hypertension'.
Where fat comes from determines whether the body can metabolize it effectively. Researchers at Washington University School of Medicine in St. Louis have found that the "old" fat stored in the body's peripheral tissues -- that is, around the belly, thighs or bottom -- can't be burned efficiently unless "new" fat is eaten in the diet or made in the liver.
Two infant boys whose bodies were overloaded with excess fluid have led UCSF pediatricians to the discovery of a new genetic disease. In the process, they have discovered a rare type of mutation where different substitutions in a single amino acid cause two different, opposite genetic disorders.
A new vaccine designed at The Rockefeller University boosted a type of fast-responding immune system cell called the natural killer T (NKT) cell in patients with advanced cancer. The study surprised researchers by revealing the ability of these NKT cells to spur other, slower-responding immune cells to go to work.
A comprehensive study from Canada’s Robarts Research Institute has pinpointed two genes that shed significant light on why stem cells divide and develop less vigorously as we age.
This work is the first to validate gene expression analysis in human stem cells with functional experiments. The findings also suggest that changes in the expression of genes associated with universal cell signaling pathways can have a substantial impact on human stem cell behavior.
A multidisciplinary centre launched today will promote a far broader understanding of the role sugars play in human disease, scientists say.
The nucleus of an atom contains protons and neutrons. However, some atoms of the same chemical element can have varying numbers of neutrons, giving so-called isotopes of that element.
A number of articles explore the use of positron emission tomography (PET) and small animal imaging—nonsurgical techniques that open the door to understanding and treating human diseases—in the April issue of the Society of Nuclear Medicine’s Journal of Nuclear Medicine.
Body fatness was associated with more cardiovascular disease risk factors even among healthy, aerobically fit men, according to a report today in an obesity-themed issue of Circulation: Journal of the American Heart Association.
Obesity and diabetes in both adults and children are rising at alarming rates and a wide range of culprits -- super-sized food portions, lack of exercise due to television, computers, suburban sprawl and loss of gym classes, high-fat and fast foods, sugar-laden drinks and psychological trauma -- have been blamed.
As the brain develops, neurons reach out helter-skelter to form new connections, only a small number of which take hold. How the brain chooses which connections to keep and which to prune back appears to be governed by which branches have the most electrical activity-a finding that could help to explain how early experiences guide brain development.
One of the world’s leading scientists, Nobel Prize winner, Dr Sydney Brenner, has devised a new method for obtaining sequence information from thousands of genomes simultaneously. Current technologies can only analyse one genome at a time.
Researchers from The Children's Hospital of Philadelphia, the University of Pennsylvania and the University of Iowa studied 653 adults, ranging in age from 20 to 32. The subjects, all of whom were white, had been measured as newborns while participating in infant formula studies in Iowa. Those who had gained weight more rapidly during their first week were significantly more likely to be overweight decades later.
Researchers at the University of Pennsylvania School of Medicine have determined the precise molecular details of how Erbitux, a recently approved colorectal cancer drug, binds to its target on cancer cells. Knowing this chemical configuration will lead to better drug design for this family of cancer medications.
Despite improvements in death rates from cardiovascular disease (CVD) around the world, CVD remains a leading cause of death and ill health in the UK, where death rates are amongst the highest in the world. Reducing death rates from this disease remains high on the Government’s agenda, yet attention to the classical risk factors may not provide all the answers.
Moderate levels of exercise may not be enough to control mild hypertension in men and women over age 55, the age group most at risk of later developing potentially fatal heart failure, a new four-year study reports. The findings by researchers at Johns Hopkins, to be published in the journal Archives of Internal Medicine online April 11, call into question the effectiveness of national guidelines on exercise for lowering blood pressure in older people.
An Oregon Health & Science University researcher is among an international team closing in on why many people with schizophrenia and other psychotic disorders are "supersensitive" to the powerful neurotransmitter dopamine.
Microarrays provide a method of quantifying the expression and order of genes in a particular genome -- acting as a surrogate measure of cell physiology, said researchers at Baylor College of Medicine in a report that appears online today in the journal Nature Genetics.
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