Related Clues:

• Trunk within a trunk
• Renal artery feeder
• Open-air room
• Vital heart vessel
• Blood channel
• Outlet of the left ventricle
• Skylit room
• It originates from the left ventricle
• Important vessel
• Trumpet part
• It's just above the heart
• Feature of an office building, perhaps
• ''Fantastic Voyage'' route
• Church vestibule
• Earlike organ