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Correct Answer - A
Ans. is 'a' i.e., Anterior ethmoidal artery
Since external carotid artery is ligated, the bleeding comes from
branches of the internal carotid artery.
Anterior ethmoidal artery, a branch of ophthalmic artery, which is a
branch of internal carotid artery, is a constituent of the blood supply
of the Little's area of the nasal septum.
Blood supply of nasal septum
i) Internal carotid system
Anterior ethmoidal artery
Branches of ophthalmic artery
Posterior ethmoidal artery
ii) External Carotid System
Sphenopalatine artery (branch of maxillary artery) gives
nasopalatine and posterior medial nasal branches.
-Septal branch of greater palatine artery (Br. of maxillary artery).
Septal branch of superior labial artery (Br. of facial artery)
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