News tagged with bloodstream
UW plant breeders develop an even heart-healthier oat
University of Wisconsin-Madison plant breeders have developed a new oat variety that's significantly higher in the compound that makes this grain so cardio-friendly.
May 16, 2012 |
not rated yet |
0
Some scum! Microbe in pond scum enlisted in new cancer test
Scientists are enlisting the living, self-propelled microbes found in pond scum -- the pea-green surface slicks that form on ponds -- in the development of a long-awaited new test to detect the cells that spread cancer through ...
Mar 25, 2012 |
1 / 5 (1) |
0
|
Polymer film loaded with antibodies that can capture tumor cells shows promise as a diagnostic tool
Cancer cells that break free from a tumor and circulate through the bloodstream spread cancer to other parts of the body. But this process, called metastasis, is extremely difficult to monitor because the ...
Feb 24, 2012 |
4 / 5 (2) |
0
Newly identified oral bacterium linked to heart disease and meningitis
A novel bacterium, thought to be a common inhabitant of the oral cavity, has the potential to cause serious disease if it enters the bloodstream, according to a study in the International Journal of Systematic an ...
Feb 21, 2012 |
4 / 5 (1) |
0
Chemists unlock potential target for drug development
A receptor found on blood platelets whose importance as a potential pharmaceutical target has long been questioned may in fact be fruitful in drug testing, according to new research from Michigan State University ...
Chemistry / Analytical Chemistry
Jan 19, 2012 |
not rated yet |
0
Take two robots and call me in the morning
In the 1966 film "Fantastic Voyage," medical personnel board a submarine that shrinks to microscopic size and enters the bloodstream of a wounded diplomat to save his life.
Jan 06, 2012 |
4.8 / 5 (5) |
4
|
Scientists solve ricin riddle using new technology
A protein that controls how the deadly plant poison and bioweapon ricin kills has finally been identified by a team of Austrian researchers in a new study. With a combination of stem cell biology and modern ...
Dec 20, 2011 |
not rated yet |
0
New system may one day steer microrobots through blood vessels for disease treatment
Researchers use a magnetic field to generate both side-to-side and corkscrew-like motions of tiny robots.
Dec 16, 2011 |
5 / 5 (4) |
3
Understanding how cancer spreads: Nanotech single-cell monitoring technique could give insights
(PhysOrg.com) -- A technique that lets researchers monitor single cancer cells in real time as they float in liquid could help doctors study the breakaway tumor cells that cause metastasis. Metastasis is the ...
Nanotechnology / Bio & Medicine
Dec 15, 2011 |
5 / 5 (1) |
0
|
'Label-free' imaging tool tracks nanotubes in cells, blood for biomedical research
(PhysOrg.com) -- Researchers have demonstrated a new imaging tool for tracking structures called carbon nanotubes in living cells and the bloodstream, which could aid efforts to perfect their use in biomedical ...
Nanotechnology / Bio & Medicine
Dec 05, 2011 |
5 / 5 (1) |
0
|
Enzymes act like a switch, turning antibiotic resistance on and off in enterococci
Antibiotic-resistant enterococci are a serious problem for patients in the hospital, but little is known about how these bacteria are able to escape antibiotics. New discoveries about the ways in which enterococci turn their ...
Oct 31, 2011 |
not rated yet |
0
Making germs glow: New test helps save lives and cuts costs
(Medical Xpress) -- Replacing conventional laboratory tests with a new DNA sequence-based technology to identify pathogens causing bloodstream infections dramatically lowered mortality and health-care costs, ...
Oct 12, 2011 |
not rated yet |
0
Apple's mystique may grow with Steve Jobs' death
(AP) -- In the end, Steve Jobs left the world to his own devices. As macabre as it might seem, Jobs' death Wednesday will only add to the Apple mystique - and profit. The iPhone, iPad, iPod and Mac will, ...
Oct 07, 2011 |
1 / 5 (2) |
1
Drug boosts snakebite survival time by half: study
Rubbing snakebites with an ointment that slows the functioning of lymph glands could boost survival times by 50 percent, according to a study released Sunday.
Medicine & Health / Medications
Jun 26, 2011 |
5 / 5 (5) |
2
Removable 'cloak' for nanoparticles helps them target tumors
MIT chemical engineers have designed a new type of drug-delivery nanoparticle that exploits a trait shared by almost all tumors: They are more acidic than healthy tissues.
Nanotechnology / Bio & Medicine
May 02, 2011 |
5 / 5 (4) |
0
|
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.
