The blood-brain barrier (BBB) is a diffusion barrier, which impedes influx of most compounds from blood to brain. Three cellular elements of the brain microvasculature compose the BBB-endothelial cells, astrocyte end-feet, and pericytes (PCs). Tight junctions (TJs), present between the cerebral endothelial cells, form a diffusion barrier, which selectively excludes most blood-borne substances from entering the brain. Astrocytic end-feet tightly ensheath the vessel wall and appear to be critical for the induction and maintenance of the TJ barrier, but astrocytes are not believed to have a barrier function in the mammalian brain. Source: http://www.citeulike.org/user/superpyrin/article/1061013
Tissue capillaries
Area postrema doesn't have blood brain barrier
Netilmicin does not cross the blood-brain barrier.
Insulin does crosses the blood brain barrier. Insulin crosses the blood brain barrier through the process of receptor-mediated transcytosis.
Yes, dopamine can cross the blood-brain barrier.
The blood brain barrier (BBB) is composed of a high concentration of endothelial cells in the brain's capillaries, which help to prevent toxins from passing into the brain from the blood supply.
The blood brain barrier is inhibited in case of inflamed meninges. Probably the injection of histamine may release the blood brain barrier. The expert comment is awaited in this regard.
The blood-brain barrier is effective against the passage of ? Metabolic waste such as urea
The blood-brain barrier prevents various substances that could be poisonous to brain tissue (toxins), as well as many agents of infection, from crossing from the blood stream into the brain tissue.
The blood-brain barrier, via the blood stream.
the blood-brain barrier
The blood barrier is located in the brain. It is known as the blood brain barrier and is located in the middle of the ventricular system. It keeps many substances from being able to cross into the brain.
Astrocytes are the type of neurolgia that help form a blood-brain barrier :D