coronary arteries
it is ...
veins and blood vessels
Every living tissue requires blood for it's survival, so does blood vessels, great vessels even have small vessels to supply themselves and they are called as "Vasa vasorum"
The blood vessels around the brain help supply energy for your brain
muscular vessels that connect the dorsal and ventral blood vessels.
Vasodilation means the widening of blood vessels that results from relaxation of the muscular walls of the vessels.
keeps blood moving through the heart and vessels
The vessels that supply blood to the diaphragm are the inferior phrenic arteries and branches of the musculophrenic artery. These blood vessels provide oxygenated blood to the diaphragm, which is essential for its function in breathing.
muscular
Hernia
I guess you mean the heart?
your heart.