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.
Bull fighting in Spain. Bull fighting is very closely associated with Spain and can trace its origins back to 711 A.D. This is when the first bullfight took place in celebration for the crowning of King Alfonso VIII.It is very popular in Spain with several thousand Spaniards flocking to their local bull-ring each week.It is said that the total number of people watching bullfights in Spain reaches one million every year.his is when the first bullfight took place in celebration for the crowning of King Alfonso VIII. It is very popular in Spain with several thousand Spaniards flocking to their local bull-ring each week. It is said that the total number of people watching bullfights in Spain reaches one million every year.