The aorta.
pulmonary vein
The Vein does not bring blood to the Heart.
Albert Einstein
I believe the first vessel is the pulmonary trunk which brings the deoxygenated blood to the pulmonary arteries and so on....
When a blood vessel bursts, the wall of the vessel has an abnormal opening. This opening allows blood to escape the circulation, and may cause a bruise or hematoma.
He discovered the circulation of blood
William Harvey
A bruise does not mean that you have poor circulation. Healthy persons can also have it because it is basically caused by trauma or injury. The blood vessel was injured, allowing blood to "escape" the vessel and go towards neighboring tissues.
The circulation of the blood was discovered by Sir William Harvey in England in about 1600.
the circulation of blood, electricity, chromosomes, and gravity.
He discovered blood circulation