Related Clues:
- Heart outlets
- Lifelines?
- Major blood vessels
- Ventricles' outlets
- Trunks within trunks
- Inner tubes?
- Major arteries
- They have major bifurcations
- Cardiology concerns
- Large trunks
- Vital supply lines
- Vital blood lines
- Cardiologist's concerns
- So a rat gets into great arteries
- Major arteries at left or hearts