<prompt> Abbey estender flap is based on:Lingual arteryFacial arteryLabial arteryInternal maxillary artery  <response>: Ans. is c i.e. Labial artery A flap is a skin graft which has its own blood supply. Normally a skin graft to survive is revascularized by the recipient bed. A flap has its own blood supply.Abbey flap is used for Lip reconstruction. It is based on main artery of the orbicularis oris, the labial artery. 