The aorta and Pulmonary artery are the two major arteries in the human body. Aorta is the longest artery and medium of oxygenated blood to the rest of the body. The pulmonary artery delivers deoxygenated blood to the lungs for purification.
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. It is large and extends three arteries from it. The walls of aorta are thick since it has to bear high blood pressure from within, as it builds high pressure than the pulmonary artery.
Pulmonary arteries originate from pulmonary trunk towards right ventricle of the 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.
Differences 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.||Pulmonary artery is present beneath the Aorta.|
|Kind of circulation||Aorta performs systematic circulation.||Pulmonary trunk with right and left arteries perform pulmonary circulation.|
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