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 results show that the growth of new blood vessels weakens and the growth of malignant tumors slows if the amount of these cells in the organism is below normal.
The results show that the growth of new blood vessels weakens and the growth of malignant tumours slows if the amount of these cells in the organism is below normal.
Scientists in the US identified a "switch" made from a short strand of genetic material that plays a crucial role in blood vessel renewal.
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.
These studies suggest the possibility that arsenic may disrupt normal vasomotor function, leading to hypercontraction of blood vessels.
The cells interacted with astrocytes, another type of cell, and "completely rescued" the at-risk blood vessels and also appeared to rescue some photoreceptors-structures that are destroyed in RP.
In order to avoid massive internal bleeding, the vibrating scalpel also causes blood vessels around a cut to seal off.
At UCLA, the patients will receive the genes through a catheter to blood vessels in the heart.
Pulmonary hypertension--a condition in which the blood pressure rises in the blood vessels of the lungs.
But when there is leakage it goes through the blood vessel walls into the perivascular space and pools there.
Researchers now believe that before cholesterol gets deposited in an artery, the blood vessel wall suffers a microscopic "injury.
Contrary to conventional wisdom, the extra blood vessels formed through the blockade of Dll4 served to choke the tumors rather than feed them.