The pulmonary artery carries blood from the heart to the lungs, where it receives oxygen. It is unique because the blood in it is not oxygenated, as it has not yet passed through the lungs. The other unique artery is the umbilical artery, which carries deoxygenated blood from a fetus to its mother]. Arteries have a higher blood pressure than other parts of the circulatory system. The pressure in arteries varies during the cardiac cycle. It is highest when the heart contracts and lowest when heart relaxes.
This is also the day of the festival's first bull run. In Spanish, the running of the bulls is called San Fermin or San Fermines. A History of the Bull Run. Starting in 1324, Pamplona organized an annual festival to honour the city's patron saint: Saint Fermin.
History of the Running of the Bulls. The history of the bullrunning in Pamplona is not clear. There is evidence of the festival from as far back as the 13th century when it seems the events took place in October as this coincided with the festival of San FermÃ­n on October 10th.