Function. While veins usually carry deoxygenated blood from tissues back to the heart, in this case, pulmonary veins are among the few veins that carry oxygenated blood instead. Oxygenated blood from the lungs is circulated back to the heart through the pulmonary veins that drain into the left atrium.unction. While veins usually carry deoxygenated blood from tissues back to the heart, in this case, pulmonary veins are among the few veins that carry oxygenated blood instead. Oxygenated blood from the lungs is circulated back to the heart through the pulmonary veins that drain into the left atrium.
There are five major problems in defining the term 'terrorism' and building a consensus. The first major problem faced by the academics and even the nations in defining terrorism is the relativist enmesh of the concept. For one it is a freedom fighting, while for the other it is terrorism.
In the US, domestic terrorism means the ostensible perpetrators were born or at least raised in the US. While I can't address most domestic terror acts. I urge you to at least check out the information from Wolfgang Halbig, former Florida state trooper and former school principal, Sandy Hook Justice - Sandy Hook Justice.