News tagged with blood circulation
The rate of strokes suffered by Australians has dropped over the past 20 years, while strokes caused by an irregular heartbeat now account for one third of all strokes, according to new research led by the University of Adelaide.
Cardiology May 16, 2013 | not rated yet | 0
Individual cancer cells that break away from the original tumor and circulate through the blood stream are considered responsible for the development of metastases. These dreaded secondary tumors are the ...
Cancer Apr 22, 2013 | 5 / 5 (3) | 0 |
Drug-eluting stents can keep clogged leg arteries open, preventing amputation of the leg, suggests research being presented at the Society of Interventional Radiology's 38th Annual Scientific Meeting in New Orleans.
Cardiology Apr 14, 2013 | 5 / 5 (1) | 0
Tiina Näsi, a researcher of biomedical engineering at Aalto University, studied in her doctoral thesis the use of light in measuring the brain's blood circulation. This optical measurement may in the future help discover ...
Medical research Apr 12, 2013 | not rated yet | 0
A new system for isolating rare circulating tumor cells (CTCs) – living solid tumor cells found at low levels in the bloodstream – shows significant improvement over previously developed devices and does ...
Cancer Apr 03, 2013 | not rated yet | 0 |
A proof-of-concept device is nearly perfect in separating breast cancer cells from blood.
Cancer Mar 25, 2013 | not rated yet | 0
UPMC surgeons have performed a "breathing lung" transplant using a portable machine that provides a constant supply of blood and nutrients to the donor organs, which doctors say has the potential to keep them healthier and ...
Other Mar 14, 2013 | not rated yet | 0
New research has shown the presence of a disease affecting small blood vessels, known as microangiopathy, in the bone marrow of diabetic patients. While it is well known that microangiopathy is the cause of renal damage, ...
Diabetes Jan 31, 2013 | 5 / 5 (3) | 0 |
(Medical Xpress)—At least one in five people in countries for which data are available were infected with influenza during the first year of the 2009 H1N1 pandemic, according to a new study.
Diseases, Conditions, Syndromes Jan 25, 2013 | not rated yet | 0 |
(Medical Xpress)—A group of researchers in Austria and Switzerland has for the first time proven that immune cells migrate along chemical concentration gradients. This process has long been assumed but ...
Immunology Jan 18, 2013 | not rated yet | 0 |
A Finnish study shows that patients who have experienced subarachnoid haemorrhage (SAH) have a highly increased risk of death due to a stroke or cerebral haemorrhage, and have double the mortality rate of the general population. ...
Neuroscience Jan 14, 2013 | not rated yet | 0
Computer simulations of blood flow through mechanical heart valves could pave the way for more individualized prosthetic
Every year, over 300,000 heart valve replacement operations are performed worldwide. Diseased valves are often replaced with mechanical heart valves (MHVs), which cannot yet be designed to suit each patient's ...
Cardiology Dec 19, 2012 | not rated yet | 0
A study conducted by researchers at the University of Granada Group of Neuropsychology and Clinical Psychoneuroimmunology has demonstrated that cortisol levels in saliva are associated with a person's ability to make good ...
Psychology & Psychiatry Dec 10, 2012 | not rated yet | 0
Jellyfish inspire scientists to invent a device that can detect, capture and release rare cancer cells
Tumor cells circulating in a patient's bloodstream can yield a great deal of information on how a tumor is responding to treatment and what drugs might be more effective against it. But first, these rare ...
Cancer Nov 12, 2012 | not rated yet | 0 |
(Medical Xpress)—Using something called "inertial microfluidics," University of Cincinnati researchers are able to continuously and selectively collect rare cells, such as circulating tumor cells, based ...
Cancer Oct 26, 2012 | not rated yet | 0 |
The circulatory system is an organ system that passes nutrients (such as amino acids and electrolytes), gases, hormones, blood cells, nitrogen waste products, etc. to and from cells in the body to help fight diseases and help stabilize body temperature and pH to maintain homeostasis. This system may be seen strictly as a blood distribution network, but some consider the circulatory system as composed of the cardiovascular system, which distributes blood, and the lymphatic system, which distributes lymph. While humans, as well as other vertebrates, have a closed cardiovascular system (meaning that the blood never leaves the network of arteries, veins and capillaries), some invertebrate groups have an open cardiovascular system. The most primitive animal phyla lack circulatory system. The lymphatic system, on the other hand, is an open system.
The main components of the human circulatory system are the heart, the blood, and the blood vessels. The circulatory system includes: the pulmonary circulation, a "loop" through the lungs where blood is oxygenated; and the systemic circulation, a "loop" through the rest of the body to provide oxygenated blood. An average adult contains five to six quarts (roughly 4.7 to 5.7 liters) of blood, which consists of plasma, red blood cells, white blood cells, and platelets. Also, the digestive system works with the circulatory system to provide the nutrients the system needs to keep the heart pumping.
Two types of fluids move through the circulatory system: blood and lymph. The blood, heart, and blood vessels form the cardiovascular system. The lymph, lymph nodes, and lymph vessels form the lymphatic system. The cardiovascular system and the lymphatic system collectively make up the circulatory system.
For more information about Circulatory system, read the full article at
This text uses material from Wikipedia and is available under the GNU Free Documentation License.