there are only 2 vessels that take blood from the heart. The Pulmonary trunk that bifurcates into the (right and left) pulmonary arteries. and the aorta. the aorta is the largest vessel in the body and certainly would be considered thick walled.
An artery takes blood away from the heart
Arteries
arteries take blood away from the heart
The valve on the aorta (the vessel taking blood away from the heart) is called the "aortic valve".
The Aorta pumps blood from the heart to the body.
Pulmonary Vein
aorta
Aorta (the largest artery, carries blood out of the heart)
The pulmonary arteries carry blood from the heart to the lungs and pulmonary veins carry blood back to the heart.
The major arteries that take blood away from the heart are the aorta and pulmonary arteries.
Descending aorta
An artery.