News tagged with bloodstream
Heroin vaccine blocks relapse in preclinical study
Scientists at The Scripps Research Institute (TSRI) have reported successful preclinical tests of a new vaccine against heroin. The vaccine targets heroin and its psychoactive breakdown products in the bloodstream, preventing ...
Medical research
May 06, 2013 |
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Team develops mathematical model to measure hidden HIV
(Medical Xpress)—Scientists have long believed that measuring the amount of HIV in a person's blood is an indicator of whether the virus is actively reproducing. A University of Delaware-led research team ...
HIV & AIDS
May 08, 2013 |
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CLABSI prevention efforts result in up to 200,000 infections prevented in intensive care units
New research from the Centers for Disease Control and Prevention (CDC) estimates that as many as 200,000 central line-associated bloodstream infections (CLABSIs) have been prevented among patients in intensive care units ...
Diseases, Conditions, Syndromes
May 13, 2013 |
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Researchers use human vaccine to cure prostate cancer in mice
University of Leeds researchers, funded by Cancer Research UK, have used a library of DNA to create a vaccine that could be used to treat cancer, according to a study published in Nature Medicine.
Medical research
Jun 19, 2011 |
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Study finds protein in platelets fight malaria but only for some people
(Medical Xpress)—Researchers in Australia have found that a protein in platelets found naturally in blood has a protective effect against malaria. In their paper published in the journal Science, the team describes how th ...
Medical research
Dec 07, 2012 |
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Will green tea help you lose weight?
Evidence has shown that green tea extract may be an effective herbal remedy useful for weight control and helping to regulate glucose in type 2 diabetes. In order to ascertain whether green tea truly has this potential, Jae-Hyung ...
Overweight and Obesity
Apr 29, 2013 |
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Capturing cancer cells
(Medical Xpress)—When dealing with cancer, time is critical. Identifying cancer before it spreads can often be the difference between life and death, so early diagnosis is key.
Cancer
Feb 26, 2013 |
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New technology to tackle treatment-resistant cancers
Free-flowing cancer cells have been mapped with unprecedented accuracy in the bloodstream of patients with prostate, breast and pancreatic cancer, using a brand new approach, in an attempt to assess and control the disease ...
Cancer
Feb 03, 2012 |
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Distinct niches in bone marrow nurture blood stem cells
In research that could one day improve the success of stem cell transplants and chemotherapy, scientists have found that distinct niches exist in bone marrow to nurture different types of blood stem cells.
Medical research
Feb 24, 2013 |
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Researchers find NSAIDs help push stem cells into bloodstream prior to transplantation
(Medical Xpress)—A team of researchers at Indiana University's School of Medicine has found that giving meloxicam, a non-steroidal anti-inflammatory drug (NSAID), to people and baboons boosts the number of haematopoietic ...
Medical research
Mar 14, 2013 |
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Estrogen fights urinary infection in mouse study
(Medical Xpress)—Estrogen levels drop dramatically in menopause, a time when the risk of urinary tract infections increases significantly.
Immunology
Jan 23, 2013 |
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Scientists illuminate cancer cells' survival strategy
A team led by scientists at The Scripps Research Institute has discovered key elements of a strategy commonly used by tumor cells to survive when they spread to distant organs. The finding could lead to drugs that could inhibit ...
Cancer
Jan 26, 2012 |
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Receptor may hold key to multiple sclerosis treatment
(Medical Xpress) -- A receptor recently discovered to control the movement of immune cells across central nervous system barriers (including the blood-brain barrier) may hold the key to treating multiple sclerosis ...
Immunology
Jun 11, 2012 |
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Danger in the blood: Scientists show how antibiotic-resisting bacterial infections may form
New research may help explain why hundreds of thousands of Americans a year get sick – and tens of thousands die – after bacteria get into their blood. It also suggests why some of those bloodstream ...
Diseases, Conditions, Syndromes
Aug 15, 2012 |
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New insights on control of pituitary hormone outside of brain has implications for breast cancer
The hormone prolactin is produced by the pituitary gland in the brain and then travels via the bloodstream to cells throughout the body, where it exerts multiple reproductive and metabolic effects, most notably ...
Genetics
Oct 01, 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.
