They come from pumping stations?
Else clues• Arteries
• Blood carriers
• Blood lines
• Busy arteries
• Cardiological concerns
• Cardiologist's concerns
• Central arteries
• Corporeal channels
• Corporeal conveyors
• Life supporters?
• Main arteries
• Main lines
• Major arteries
• Major blood vessels
• Major vessels
• They have major bifurcations
• They're from the heart
• Trunk lines
• Vascular vessels
• Vascular viae
• Vital blood lines
• Vital supply lines
• Ways to someone's heart