Shingles, also known as zoster or herpes zoster, is a painful skin rash caused by the same virus responsible for chicken pox: the varicella zoster virus. Even if you had chicken pox in the past, you can still contract shingles.aused by the herpes virus, the earliest symptoms of both conditions include headache, fever, a general feeling of malaise, sore throat and swelling of the face. Chicken pox is very common in children, being actually a children's disease. It is very contagious and it is actually nothing but a viral infection.
The pulmonary vein is the vessel transporting oxygen-rich blood from the lungs to the left atrium. A common misconception is that all veins carry de-oxygenated blood. It is more appropriate to classify veins as vessels carrying blood to the heart.
The heart pumps oxygenated blood around the body by the arteries which then enter tissues through tiny capillaries. Once the oxygen has diffused across into the cells, carbon dioxide then bonds to the red blood cells instead. Now the blood has very little oxygen and lots of carbon dioxide. It is transported back to the heart by veins (of which the biggest is the vena cava) to be pumped up to the lungs. This is where it gets a bit strange. Previously, any vessel carrying oxygenated blood was an artery whilst any vessel carrying deoxygenated blood was a vein. With the lungs, it is reversed.