News tagged with cardiovascular system
Powerful imaging tool unlocks kidneys' secrets
(Medical Xpress)—A powerful new way of imaging kidneys is providing scientists with insights into the importance of the body's filtering system and how it is affected by cardiovascular disease, stroke and ...
Diseases, Conditions, Syndromes
May 20, 2013 |
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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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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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Exposure to everyday noise influences heart rate variability
(Medical Xpress)—Exposure to noise, for example from road traffic, may adversely affect the cardiovascular system. Until now, underlying mechanisms linking noise to elevated cardiovascular risk have rarely been explored ...
Health
May 02, 2013 |
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Expectant mothers' saliva tells stories of stress
This weekend, many mothers-to-be celebrated Mother's Day, a welcome relief from the inherent stresses of pregnancy.
Pediatrics
May 14, 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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Fish oil may hold key to leukemia cure
A compound produced from fish oil that appears to target leukemia stem cells could lead to a cure for the disease, according to Penn State researchers. The compound -- delta-12-protaglandin J3, or D12-PGJ3 ...
Cancer
Dec 22, 2011 |
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Mayo Clinic creates institution-wide electronic prolonged QT interval warning system
Using a one-of-a-kind computer-aided program, Mayo Clinic has developed and implemented a Mayo-wide electronic warning system to identify patients at risk of QT-related deaths from an abnormality in the heart's electrical ...
Cardiology
Apr 25, 2013 |
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Understanding a heart patients' quality of life can improve outcomes
Completing a quality-of-life questionnaire at a healthcare provider's office could help patients live longer and live better, according to a new scientific statement published in Circulation, a journal of the American Heart ...
Cardiology
May 06, 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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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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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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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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Adolescent smokers have artery damage
Adolescent smokers have thicker artery walls indicative of early development of atherosclerosis, according to research presented today at the ESC Congress. The findings from the Sapaldia Youth Study were ...
Cardiology
Aug 27, 2012 |
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Love, chocolate good for the heart, cardiologist says
(Medical Xpress) -- Being involved in a healthy, loving relationship is good for the heart, says Vanderbilt Heart and Vascular Institute cardiologist Julie Damp, M.D. “There are a couple of different theories behind why t ...
Health
Feb 14, 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.
