Which aery is responsible for epistaxis after ligation of external carotid aery?
Ethmoidal aery is a branch of internal carotid aery while rest of the aeries provided in the options are branches of external carotid aeries, thereby after ligation of external carotid aery, ethmoidal aery is the only aery which can cause epistaxis.
Ethmoidal aery
Greater palatine aery
Ascending pharyngeal aery
Superior labial aery