The blood-brain barrier is an example of low-permeability capillaries; all but the most vital molecules are prevented from leaving the blood and entering the brain tissue
ANS is A which is then followed by skin (cell to cell junctions that packs adjacent epithelial cellstogether, preventing the passage of most dissolved moleculesfrom one sideof the epithelial sheet to the other).
Is it b)
The blood-brain barrier is an example of low-permeability capillaries; all but the most vital molecules are prevented from leaving the blood and entering the brain tissue