Because they carry veinous blood.
Because they are also carrying oxygenpoor blood.
The color blue is to symbolize that DEoxygenated blood runs through them.
The pulmonary trunk divides into the left and right pulmonary arteries.
Because both are carrying blood without oxygen.
pulmonary trunk The previous answer was coronary arteries, but I asked my bio teacher and she said the answer was pulmonary trunk.
the pulmonary trunk
Pulmonary trunk
The aorta and the one to the lungs called the pulmonary arteries. However, the pulmonary first branch off of the pulmonary trunk.
the pulmonary trunk and the right and left pulmonary arteries
The pulmonary artery
at places where blood leaves via the aorta and pulmonary arteries. (pulmonary trunk)
The left and right pulmonary arteries carry blood from the pulmonary trunk to the hilum of the corresponding lung.