News tagged with blood supply
'Molecular grenade': Drug from Mediterranean weed kills tumor cells in mice
Scientists at the Johns Hopkins Kimmel Cancer Center, working with Danish researchers, have developed a novel anticancer drug designed to travel -- undetected by normal cells -- through the bloodstream until activated by ...
Cancer
Jul 09, 2012 |
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Two-arm blood pressure check indicator for risk from heart disease or death
A systematic review and meta-analysis carried out by researchers at the University of Exeter Peninsula College of Medicine and Dentistry (PCMD) has found that differences in systolic blood pressure between arms could be a ...
Cardiology
Jan 29, 2012 |
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Biomedical engineers patch a heart using novel tissue cell therapy
(Medical Xpress) -- Researchers at Columbia Engineering have established a new method to patch a damaged heart using a tissue-engineering platform that enables heart tissue to repair itself. This breakthrough, ...
Cardiology
May 06, 2011 |
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Lack of oxygen in cancer cells leads to growth and metastasis
(Medical Xpress)—It seems as if a tumor deprived of oxygen would shrink. However, numerous studies have shown that tumor hypoxia, in which portions of the tumor have significantly low oxygen concentrations, ...
Cancer
Sep 13, 2012 |
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Ability of brain to protect itself from damage revealed
The origin of an innate ability the brain has to protect itself from damage that occurs in stroke has been explained for the first time.
Medical research
Feb 24, 2013 |
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Mini-organ would mimic pancreas to treat type 1 diabetes
(HealthDay)— A new bioengineered, miniature organ dubbed the BioHub might one day offer people with type 1 diabetes freedom from their disease.
Medical research
Mar 05, 2013 |
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Stents disrupt blood flow
(Medical Xpress)—A researcher at ETH Zurich is designing a realistic artery model with an implanted stent and is using a computer to simulate the blood flow through the stent. In doing so he is uncovering ...
Cardiology
May 06, 2013 |
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Tomato nutrient may intercept cancer growth
(Medical Xpress) -- A nutrient in cooked tomatoes has been shown in laboratory studies to slow the growth of or even kill prostate cancer cells.
Cancer
Feb 02, 2012 |
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Heart disease prevention -- a good investment for individuals, communities
Preventing heart disease before it starts is a good long-term investment in the nation's health, according to a new policy statement from the American Heart Association.
Cardiology
Jul 25, 2011 |
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Donated hearts may beat much longer
New technology increases the length of time that a human heart can remain viable for transplant after removal from a donor for transplantation.
Medical research
Feb 14, 2012 |
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Nonsurgical method to measure brain pressure shows promise
(HealthDay) -- A new nonsurgical method for monitoring brain pressure might help improve treatment of head injury patients, according to a new study.
Medical research
Apr 11, 2012 |
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Better management of traumatic brain injury
New treatments to lessen the severity of the more than 21,000 Traumatic Brain Injury (TBI) cases that occur in Australia each year are on the horizon.
Neuroscience
Jul 19, 2012 |
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Protein that helps tumor blood vessels mature could make cancer drugs more effective
Since anti-cancer drugs are carried to tumors by the bloodstream, abnormal blood vessel development can hamper delivery. In a paper published Aug. 14 in Cancer Cell, researchers at Sanford-Burnham Medica ...
Cancer
Aug 13, 2012 |
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Enzyme explains angina in diabetics
(Medical Xpress)—In a new study published in the scientific journal Circulation, scientists at Karolinska Institutet and Karolinska University Hospital show that an enzyme called arginase might have a key ...
Cardiology
Nov 27, 2012 |
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New technique for minimally invasive robotic kidney cancer surgery
Urologists at Henry Ford Hospital have developed a new technique that could make minimally invasive robotic partial nephrectomy procedures the norm, rather than the exception for kidney cancer patients. The technique spares ...
Surgery
Dec 13, 2012 |
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Circulatory system
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
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
