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.
During the large second wave of the COVID-19 pandemic in fall 2020, pulmonologist and critical care provider Juan C. Rojas, MD, reflected on how disproportionately members of minority populations were being affected by the disease.
A year after University at Buffalo scientists demonstrated that it was possible to produce millions of mature human cells in a mouse embryo, they have published a detailed description of the method so that other laboratories can do it, too.
In an Australian world-first, researchers have successfully repurposed two existing medications to reduce the severity of sleep apnea in people by at least 30 per cent.
Over years of studying antibody responses against the flu in the Wilson lab at the University of Chicago, researchers kept coming up with a strange finding: antibodies that seemed to bind not only to the flu virus but to every virus the lab could throw at them.
Researchers from collaborating universities in Virginia have recently utilized transgenic mice to explore the effects of SARS-CoV-2 on associated lung injury.
When it comes to defense, the body relies on attack thanks to the lymphatic and immune systems. The immune system is like the body's own personal police force as it hunts down and eliminates pathogenic villains.
Brian Clark, Ph.D., professor of physiology and neuroscience in Ohio University Heritage College of Osteopathic Medicine's Department of Biomedical Sciences, received a five-year, nearly $3 million National Institutes of Health grant to conduct a series of animal and human studies to better understand the mechanisms and clinical relevance of age-related changes in motor neuron excitability.
Working out just five minutes daily via a practice described as "strength training for your breathing muscles" lowers blood pressure and improves some measures of vascular health as well as, or even more than, aerobic exercise or medication, new CU Boulder research shows.
Hypertension is a chronic disease that canlead toserious health problems.Patients with arterial hypertensionare required to measure their blood pressure at home, which can have some drawbacks, such as forgetting to checkitor recordingthe values, errors inwriting downthe figures,the inabilityto immediately notify health care staff aboutout-of-range blood pressure values, etc.
Fire can put a tropical songbird's sex life on ice. Following habitat-destroying wildfires in Australia, researchers found that many male red-backed fairywrens failed to molt into their red-and-black ornamental plumage, making them less attractive to potential mates. They also had lowered circulating testosterone, which has been associated with their showy feathers.
Amyloid diseases, including Alzheimer's, Parkinson's, type-2 diabetes and other life-threatening diseases, involve pathologic deposits of normally soluble proteins or peptides as insoluble amyloid fibrils. When this happens in vital organs, such as the brain, kidney, liver and heart, it causes organ damage and, if left untreated, death. Unfortunately, the available treatment options are very limited.
A naturally occurring peptide in sunflower seeds was synthetically optimised and has now been identified as a potential drug for treating abdominal pain or inflammation (in the gastrointestinal tract, abdominal area and/or internal organs).
An interesting new study available as a preprint on the medRxiv* server suggests that vagally-mediated heart rate variability (vmHRV) is a physiological marker of resilience to stress by indicating how well an individual handles the emotions when faced with changes in the surroundings.
The American Thyroid Association, the European Association of Nuclear Medicine, the European Thyroid Association, and the Society of Nuclear Medicine and Molecular Imaging released a joint statement on three key topics addressing controversies in thyroid cancer care.
New research from the University of California, Irvine reveals how the circadian regulation of glucose production in the liver is lost during lung cancer progression, and how the resulting increase in glucose production may fuel cancer cell growth.
When we think of the brain, we think of neurons. But much of the brain is made of non-neuronal cells called glial cells, which help regulate brain development and function.
The brain's neurons tend to get most of the scientific attention, but a set of cells around them called astrocytes - literally, star-shaped cells - are increasingly being viewed as crucial players in guiding a brain to become properly organized.
Early in the COVID-19 pandemic, scientists identified how SARS-CoV-2, the virus that causes COVID-19, gets inside cells to cause infection.
A study from the Centre for Nutraceuticals at the University of Westminster found that plant-based protein shakes may be potential viable alternatives to milk-based whey protein shakes, particularly in people with need of careful monitoring of glucose levels.
A new University of California, Irvine-led study finds that the persistence of a marker of chronic cellular stress, previously associated with neurodegenerative diseases such as amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD), also takes place in the brains of Huntington's disease (HD) patients.