Blood Vessels


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Blood vessels

Tubular channels for blood transport, of which there are three principal types: arteries, capillaries, and veins. Only the larger arteries and veins in the body bear distinct names. Arteries carry blood away from the heart through a system of successively smaller vessels. Capillaries are the smallest but most extensive blood vessels, forming a network everywhere in the body tissues. Veins carry blood from the capillary beds back to the heart through increasingly larger vessels. In certain locations blood vessels are modified for particular functions, as the sinusoids of the liver and the spleen and the choroid plexuses of the brain ventricles. See Lymphatic system

Blood Vessels

 

in animals and man, vessels through which blood moves from the heart or central pulsating organ to the tissues (the arteries, arterioles, and arterial capillaries) and from the tissues to the heart (the venous capillaries, venules, and veins). The blood vessels and the heart together form a single cardiovascular system.

References in periodicals archive ?
The team is currently working to improve the particles' cancer-fighting abilities by increasing their potential to block blood vessels and by designing hollow nanoparticles that can also deliver chemotherapy drugs.
Obviously, a better understanding of what is different in blood vessels at the tumor site is essential to tailor drugs more specifically to focus on the site of disease.
"Other groups are investigating the use of specialized radiation treatments to selectively destroy new blood vessel development," says Dr.
Some patients have the ability to grow new blood vessels naturally but others lack either the protein or the receptor to stimulate organic growth.
Martin Friedlander, PhD and colleagues at the Scripps Research Institute in LaJolla, CA studied endothelial precursor cells (EPCs), a subset of hematopoietic stem cells that forms blood vessels. According to their report in an advance online publication of the September issue of Nature Medicine, hematopoietic stem cells that contain large quantities of EPCs can be used to both promote and inhibit the growth of blood vessels in the retina.
For example, when we're infants we grow new blood vessels. When we're adults we do so, but in only a very limited way.
In a process known as atherosclerosis, fatty substances build up inside the walls of blood vessels. Blood components also stick on the surface inside vessel walls.
This barrier is a "wall" of tiny endothelial cells in the blood vessels that permeate the brain tissue, nourishing it and providing oxygen.
Even with careful insulin treatment, people who have had diabetes for years are at greater than average risk of developing problems that involve the heart, blood vessels, eyes, kidneys, and nerves.
[USA], November 23 (ANI) - Researchers have identified a signaling pathway that is essential for the growth of new blood vessels from pre-existing blood vessels.
Researchers at CSIRO's Data61 are developing a software tool that could significantly improve the detection of angiogenesis - the development of new blood vessels which is known to precede the growth of cancers.
IRVINE, Calif., May 16, 2017-By using induced pluripotent stem cells (iPSCs) to create endothelial cells that line blood vessels in the brain for the first time for a neurodegenerative disease, scientists here have learned why Huntington's disease patients have defects in the blood-brain barrier that contribute to the symptoms of this fatal disorder.