The first part of the subclavian artery begins from the origin of subclavian artery and extends to the medial border of the scalenus anterior muscle. It gives off following important branches: 1. Vertebral artery. 2. Thyrocervical trunk.
Hartzell Engine Technologies Appoints Quality Aircraft Accessories as a Recommended Service Facility for Turbochargers and Turbosystem Components.
2. (Navigation) a post or tower for guiding pilots or marking a turning point in a race. 3. (Aeronautics) a streamlined aircraft structure for attaching an engine pod, external fuel tank, etc, to the main body of the aircraft.