News tagged with blood
Health 23 minutes ago | not rated yet | 0 |
A study by researchers at Henry Ford Hospital found "substantial evidence" that a regenerative process involving damaged nerve fibers in the spinal cord could hold the key to better functional recovery by most stroke victims.
Neuroscience 2 hours ago | not rated yet | 0 |
(Medical Xpress)—The first symptoms of major depression may be behavioral, but the common mental illness is based in biology—and not limited to the brain.
Psychology & Psychiatry 6 hours ago | 5 / 5 (3) | 0 |
In a series of lab experiments designed to unravel the workings of a key enzyme widely considered a possible trigger of rheumatoid arthritis, researchers at Johns Hopkins have found that in the most severe ...
Arthritis & Rheumatism May 22, 2013 | 5 / 5 (2) | 0 |
Phthalates: Study links chemicals widely found in plastics, processed food to elevated blood pressure in children, teens
Plastic additives known as phthalates (pronounced THAL-ates) are odorless, colorless and just about everywhere: They turn up in flooring, plastic cups, beach balls, plastic wrap, intravenous tubing and—according to the ...
Pediatrics May 22, 2013 | not rated yet | 1 |
Treating pediatric leukemia patients with a liposomal formulation of anthracycline-based chemotherapy at a more intense-than-standard dose during initial treatment may result in high survival rates without causing any added ...
Cancer 2 hours ago | not rated yet | 0
Spanish researchers have discovered that the daily clearance of neutrophils from the body stimulates the release of hematopoietic stem cells from the bone marrow into the bloodstream, according to a report published today ...
Medical research 2 hours ago | not rated yet | 0
Johns Hopkins researchers have developed new guidelines—the first in more than 35 years—to govern the amount of blood ordered for surgical patients. The recommendations, based on a lengthy study of blood use at The Johns ...
Surgery May 22, 2013 | 4 / 5 (1) | 0
Costs to treat stroke are projected to more than double and the number of people having strokes may increase 20 percent by 2030, according to the American Heart Association/American Stroke Association.
Cardiology May 22, 2013 | not rated yet | 0
(Medical Xpress)—High blood pressure is something that has traditionally been a problem in Scotland, but might there be a link to our climate?
Health May 22, 2013 | not rated yet | 0
Beta-blockers, normally used for high blood pressure, could enhance the effectiveness of chemotherapies in treating neuroblastoma, a type of children's cancer, according to a new study published in the British Jo ...
Cancer May 22, 2013 | not rated yet | 0
A potentially ground-breaking human drug trial is currently underway, which aims to discover whether blood pressure medication can slow or halt the progression of Alzheimer's Disease (AD). This is the latest ...
Alzheimer's disease & dementia 3 hours ago | not rated yet | 0
Canadian health authorities lifted Wednesday what was effectively a ban on gay men giving blood, announcing new rules making men who have not had sex with men in the past five years eligible.
HIV & AIDS 22 hours ago | not rated yet | 1
Blood thinners are the preferred treatment option to prevent heart attacks, blood clots and stroke, but they are not without risk, and not just because of their side effects. These high-risk drugs, known as anticoagulants, ...
Cardiology May 22, 2013 | not rated yet | 0
New research at The University of Nottingham aimed at preventing harmful blood clots associated with heart disease and stroke has recently received a major funding boost from the British Heart Foundation.
Medical research May 22, 2013 | not rated yet | 0
- Pages: 1
Blood is a specialized bodily fluid that delivers necessary substances to the body's cells — such as nutrients and oxygen — and transports waste products away from those same cells.
In vertebrates, it is composed of blood cells suspended in a liquid called blood plasma. Plasma, which comprises 55% of blood fluid, is mostly water (90% by volume), and contains dissolved proteins, glucose, mineral ions, hormones, carbon dioxide (plasma being the main medium for excretory product transportation), platelets and blood cells themselves. The blood cells present in blood are mainly red blood cells (also called RBCs or erythrocytes) and white blood cells, including leukocytes and platelets. The most abundant cells in vertebrate blood are red blood cells. These contain hemoglobin, an iron-containing protein, which facilitates transportation of oxygen by reversibly binding to this respiratory gas and greatly increasing its solubility in blood. In contrast, carbon dioxide is almost entirely transported extracellularly dissolved in plasma as bicarbonate ion.
Vertebrate blood is bright-red when its hemoglobin is oxygenated. Some animals, such as crustaceans and mollusks, use hemocyanin to carry oxygen, instead of hemoglobin. Insects and some molluscs use a fluid called hemolymph instead of blood, the difference being that hemolymph is not contained in a closed circulatory system. In most insects, this "blood" does not contain oxygen-carrying molecules such as hemoglobin because their bodies are small enough for their tracheal system to suffice for supplying oxygen.
Jawed vertebrates have an adaptive immune system, based largely on white blood cells. White blood cells help to resist infections and parasites. Platelets are important in the clotting of blood. Arthropods, using hemolymph, have hemocytes as part of their immune system.
Blood is circulated around the body through blood vessels by the pumping action of the heart. In animals having lungs, arterial blood carries oxygen from inhaled air to the tissues of the body, and venous blood carries carbon dioxide, a waste product of metabolism produced by cells, from the tissues to the lungs to be exhaled.
Medical terms related to blood often begin with hemo- or hemato- (also spelled haemo- and haemato-) from the Ancient Greek word αἶμα (haima) for "blood". In terms of anatomy and histology, blood is considered a specialized form of connective tissue, given its origin in the bones and the presence of potential molecular fibers in the form of fibrinogen.
For more information about Blood, read the full article at
This text uses material from Wikipedia and is available under the GNU Free Documentation License.