<prompt> Blood supply of thoracic pa of esophagusAoaInferior thyroid aeryGastric aerySuperior thyroid aery  <response>: OESOPHAGUS-AERIAL SUPPLY 1.The cervical pa including the segment upto the arch of aoa is supplied by the inferior thyroid aeries. 2.The thoracic pa is supplied by the oesophageal branches of the aoa. 3.The abdominal pa is supplied by the oesophageal branches of the left gastric aery. REF:B D Chaurasias human anatomy,Vol.1.Fifth edition.Pg 270 