News tagged with blood supply
Cutting off the oxygen supply to serious diseases
A new family of proteins which regulate the human body's 'hypoxic response' to low levels of oxygen has been discovered by scientists at Barts Cancer Institute at Queen Mary, University of London and The University of Nottingham.
Jan 30, 2012 |
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Blood progenitor cells receive signals from niche cells and the daughter blood cells they create
Maintaining balance is crucial. In Drosophila, the common fruit fly, the creation and maintenance of the blood supply requires such balance.
Dec 22, 2011 |
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Reprogramming stem cells to a more basic form results in more effective transplant, study shows
Chinese stem cell scientists have published new research that improves the survival and effectiveness of transplanted stem cells. The research led by Dr Hsiao Chang Chan, from the Chinese University of Hong Kong, is published ...
Nov 03, 2011 |
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Gold nanoparticles bring scientists closer to a treatment for cancer
Scientists at the University of Southampton have developed smart nanomaterials, which can disrupt the blood supply to cancerous tumours.
Nanotechnology / Bio & Medicine
Jul 07, 2011 |
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Heart attacks are more serious in the morning: study
Heart attacks that occur in the morning are likely to be more serious than attacks at other times of the day, a specialist journal reported on Wednesday.
Medicine & Health / Cardiology
Apr 26, 2011 |
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Simple injection could limit damage from heart attacks and stroke
(PhysOrg.com) -- This weeks Early Edition of the Proceedings of the National Academy of Sciences (PNAS) will publish a fascinating new milestone achievement in the search for novel clinical therapies to significantly reduce the lo ...
Medicine & Health / Cardiology
Apr 18, 2011 |
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New stem cell research
(PhysOrg.com) -- Scientists from King's College London have uncovered the first genetic evidence that shows cells found on the surface of blood vessels can act as stem cells to assist in both organ growth ...
Medicine & Health / Medical research
Apr 05, 2011 |
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Research targets way to stop brain tumor cell invasion
Gliomas are brain invaders. A kind of malignant tumor cell, gliomas branch out like tendrils from a central tumor source, spreading cancer throughout the brain. Traditional therapies, such as cutting out the tumor surgically, ...
Mar 29, 2011 |
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No scalpel: Minimally invasive breakthrough for men’s enlarged prostates improves symptoms
A new interventional radiology treatment that blocks blood supply to men's enlarged prostate glands shows comparable clinical results to transurethral resection of the prostate (or TURP), considered the gold standard (or ...
Mar 29, 2011 |
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Journal of Dental Research releases large studies on osteonecrosis of the jaw
Osteonecrosis of the jaw (ONJ) is a debilitating bone condition that affects the jaws and occurs as a result of reduced local blood supply to the bone. The literature in this area has been severely limited since most investigations ...
Medicine & Health / Diseases, Conditions, Syndromes
Feb 11, 2011 |
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Immune interaction optimises foetal nourishment during pregnancy
(PhysOrg.com) -- Paternal genes advise maternal immune cells on how to build the best womb for developing foetuses.
Medicine & Health / Medical research
Feb 08, 2011 |
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Fluorescent peptides help nerves glow in surgery
Accidental damage to thin or buried nerves during surgery can have severe consequences, from chronic pain to permanent paralysis. Scientists at the University of California, San Diego School of Medicine may have found a remedy: ...
Feb 06, 2011 |
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MicroRNAs could increase the risk of amputation in diabetics
New research has found one of the smallest entities in the human genome, micro-RNA, could increase the risk of limb amputation in diabetic patients who have poor blood flow.
Medicine & Health / Medical research
Jan 12, 2011 |
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Combo high-tech CT scans just as good as older imaging to detect coronary artery disease
Heart imaging specialists at Johns Hopkins have shown that a combination of CT scans that measure how much blood is flowing through the heart and the amount of plaque in surrounding arteries are just as good ...
Medicine & Health / Medical research
Nov 16, 2010 |
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Trojan Horse ploy to sneak protective drug into brains of stroke patients
Scientists are reporting development of a long-sought method with the potential for getting medication through a biological barrier that surrounds the brain, where it may limit the brain damage caused by stroke. Their approach ...
Medicine & Health / Medications
Nov 10, 2010 |
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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.
