The pulmonary arteries carry blood from the heart to the lungs, to drop off carbon dioxide and pick up oxygen. There are two pulmonary arteries, one going to the left lung and one to the right.
Albi Cathedral. The Cathedral Basilica of Saint Cecilia (French: Basilique CathÃ©drale Sainte-CÃ©cile d'Albi), also known as Albi Cathedral, is the most important Catholic building in Albi, France, and the seat of the Roman Catholic Archbishop of Albi (in full, Albi-Castres-Lavaur).
The roof structure of Chartres cathedral is one of the oldest iron structures in France. It was built in 1837 by architect Emile Martin and locksmith Mignon. The structure was made combining wrought iron and cast iron. The principal curved beams rising to meet at a point, are cast iron.