Which among the following statement is not true?
The thyroid ima aery is infrequent (10%) and variable in its orgin. It arises from the brachiocephalic aery, aoic arch, right common carotid aery, internal thoracic aery, or subclan aery.
Superior thyroid aery is a branch of ext. carotid a
Posterior branch of superior thyroid aery supplies parathyroid gland
Inferior thyroid aery is branch of thyrocervical trunk
Thyroid ima aery is invariably a branch of arch of aoa