The aorta and pulmonary artery are the two major arteries in the human body. Aorta is the longest artery which delivers oxygenated blood from the lungs to the rest of the body. The pulmonary artery delivers deoxygenated blood to the lungs for purification.
What is an Aorta?
An Aorta is an elastic and distensible artery. When the blood is pumped into the aorta from the left ventricle, the aorta expands. The blood pressure is maintained due to this expansion during diastole, and it is caused by the blood pressure since by this time the aorta contracts subsequently. The walls of aorta are thick since it has to bear high blood pressure or Hypertension from within, as it builds high pressure than the pulmonary artery.
Also Read: Systolic and Diastolic Blood Pressure
What are Pulmonary Arteries?
Pulmonary arteries originate from pulmonary trunk towards the right ventricle of the human heart and present beneath the aorta. Pulmonary artery consists of two parts. One goes in the right lung and the other towards the left lung. It is the only artery that carries deoxygenated blood from the heart to the lungs.
Also Read: Human Circulatory System
Difference between Aorta and Pulmonary Artery
|Definition||The artery that supplies oxygenated blood to the rest of the body.||The artery that carries deoxygenated blood to the lungs.|
|Function||Carry oxygenated blood to the whole body.||To supply blood to the lungs for purification.|
|Location||Aorta is present over the heart.||The pulmonary artery is present beneath the Aorta.|
|Kind of circulation||Aorta performs systemic circulation.||Pulmonary trunk with right and left arteries perform pulmonary circulation.|
Also Read: Difference Between Arteries and Veins
Learn more in detail about the aorta, pulmonary artery, their differences and other related topics @ Byju’s Biology