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Q: Do water cross the blood brain barrier?
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How ethanol cross blood brain barrier?

It is water soluble...


Does penicillin cross blood brain barrier?

No.Gentamicin is an aminoglycosidic sugar which is Highly water soluble . It iswidely distributed in extracellular fluid and does not penetrate ocular tissue, nor readily crosses the blood-brain barrier. However The drug tends to accumulate in the kidneys, and the inner ear, explaining the reason for nephro and ototoxicity.Aminoglycosides are able to cross the placental barrier, and may cause nerve or nephrotoxic effects to the fetus.


What two components is blood brain barrier made from?

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/1061013Tissue capillaries


What determines the speed at which a drug crosses the blood brain barrier?

A compounds lipophillicity as well as a combination of other factors such as hydrophobia and surface area to air and water all effect how well a drug can permeate the blood brain barrier. Blood brain permeability is still not fully understood and defined by modern science.


Which contains more water your blood brain or your skeleton?

Your Brain contains more water than your blood and your skeleton!


What has more water blood bones or brain?

blood


The substance which limits the permeability of the blood-air barrier most is?

water


Does the brain have more water than blood?

Yes that is true the water has more water than blood in it?


How water comes to mind?

water does not go in brain , only blood with fresh oxygen goes in brain


What are beta blocker side effects?

Beta blockers are used for hypertension, high blood pressure. A side effect of some beta blockers is that they cross the blood brain barrier and can cause impotence. Water soluble beta blockers have less impotence associated with them than the fat soluble. Generally, one contraindication is diabetes as they can mask the symptoms of diabetic crisis.


Is there water in the brain?

yes water and blood because you are made up of like 95% of water


Why brain cells swell when the blood plasma is very dilute?

Osmosis is the movement of water from a High Water (Dilute Solution) to a Low Water (Strong Solution). If blood plasma becomes very dilute with water, when it travels to the brain the brain cells will swell because the are taking on too much water. This happens because the high concentration of water (in the blood) is moving to the lower concentration of water (brain cells) making the cells swell as they are taking on too much water.