<prompt> Which of the following aery is NOT ligated in a case of epistaxis?Anterior ethmoidal aeryMaxillary aeryInternal carotid aeryExternal carotid aery  <response>: Internal carotid aery shouldnt be ligated in epistaxis due to risk of development of collateral blood flow into pseudoaneurysm leading to recurrent epistaxis. Aeries which can be ligated in a case of epistaxis are: Anterior and posterior ethmoidal aery, sphenopalatine aery SPA. More rarely the internal maxillary aery or the External Carotid Aery can be ligated. 