News tagged with cardiovascular system
Study uncovers molecular role of gene linked to blood vessel formation
University of North Carolina researchers have discovered that disrupting a gene that acts as a regulatory switch to turn on other genes can keep blood vessels from forming and developing properly.
Medical research
Apr 29, 2013 |
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High heart rate at rest signals higher risk of death even in fit healthy people
A high heart rate (pulse) at rest is linked to a higher risk of death even in physically fit, healthy people, suggests research published online in the journal Heart.
Cardiology
Apr 15, 2013 |
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Study finds heart failure medications highly cost-effective
A UCLA study shows that heart failure medications recommended by national guidelines are highly cost effective in saving lives and may also provide savings to the health care system.
Cardiology
Mar 28, 2013 |
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Scientists identify culprit in obesity-associated high blood pressure
Obesity and its related conditions such as type 2 diabetes, cardiovascular disease and stroke are among the most challenging of today's healthcare concerns.
Medical research
Jan 31, 2013 |
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Long non-coding RNA molecules necessary to regulate differentiation of embryonic stem cells into cardiac cells
When the human genome was sequenced, biologists were surprised to find that very little of the genome—less than 3 percent—corresponds to protein-coding genes. What, they wondered, was all the rest of ...
Medical research
Jan 25, 2013 |
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Study: Viral reactivation a likely link between stress and heart disease
A new study could provide the link that scientists have been looking for to confirm that reactivation of a latent herpes virus is a cause of some heart problems.
Cardiology
Jan 22, 2013 |
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Strength training improves vascular function in young black men
Six weeks of weight training can significantly improve blood markers of cardiovascular health in young African-American men, researchers report in the Journal of Human Hypertension.
Cardiology
Dec 21, 2012 |
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Loss of gene expression may trigger cardiovascular disease, researchers find
(Medical Xpress)—A Yale-led team of researchers has uncovered a genetic malfunction that may lead to hardening of the arteries and other forms of cardiovascular disease. The study appears in the journal Cell Reports.
Medical research
Nov 30, 2012 |
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Heart disease map of England highlights growing social inequality in older ages
A study estimating the death rate from heart and circulatory disease in each electoral ward in England has found that despite considerable improvements since the 1980s, the difference between the wealthiest and poorest communities ...
Cardiology
Nov 04, 2012 |
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New paper examines shifting gears in the circadian clock of the heart
A new study conducted by a team of scientists led by Giles Duffield, assistant professor of biological sciences and a member of the Eck Institute for Global Health at the University of Notre Dame focuses on the circadian ...
Cardiology
Oct 23, 2012 |
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Study examines risk of heart attack associated with various psoriasis treatments
Use of tumor necrosis factor (TNF) inhibitors for treatment of psoriasis is associated with a significantly reduced risk for heart attack (myocardial infarction) compared to other forms of treatment, according to a report ...
Diseases, Conditions, Syndromes
Aug 20, 2012 |
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Increased cardiovascular risk in HIV-infected patients may relate to arterial inflammation
The elevated risk of cardiovascular disease seen in patients infected with HIV appears to be associated with increased inflammation within the arteries, according to a study that will appear in a special issue of JAMA publis ...
HIV & AIDS
Jul 22, 2012 |
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Child diabetes levels higher in China than in US, study finds
A study led by researchers at the University of North Carolina at Chapel Hill found Chinese teenagers have a rate of diabetes nearly four times greater than their counterparts in the United States. The rise in the incidence ...
Diabetes
Jul 05, 2012 |
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Ultrasounds spot heart disease early in rheumatoid arthritis patients
Special echocardiograms show promise for early detection of a potentially deadly complication in rheumatoid arthritis: heart disease, Mayo Clinic research shows. The findings were being presented at The European League Against ...
Arthritis & Rheumatism
Jun 06, 2012 |
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Beijing Olympics study reveals biological link between air pollution, cardiovascular disease
Using the 2008 Beijing Olympics as their laboratory, University of Southern California (USC) researchers and colleagues have found biological evidence that even a short-term reduction in air pollution exposure improves one's ...
Health
May 15, 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.
