Jyoti Kumariover 6 years ago

Arterial blood supply of Nose

Our nasal cavity is extremely vascular, meaning it has a large blood supply. Blood is supplied from both the internal and external carotid arteries. The major blood arteries in the nasal cavity include the anterior and posterior ethmoid arteries and the sphenopalatine arteries. Over 90% of nose bleeds occur in the anteroinferior (front bottom) nasal septum (wall that divides your nose between left and right sides) in an area k/a Kiesselbach’s plexus, Keisselbach's plexus is located over the anterior nasal septum and is formed by anastomoses (coming together) of 5 arteries: 1. Anterior ethmoidal artery (from the ophthalmic artery) 2. Posterior ethmoidal artery (from the ophthalmic artery) 3. Sphenopalatine artery (terminal branch of the maxillary artery) 4. Greater palatine artery (from the maxillary artery) 5. Septal branch of the superior labial artery (from the facial artery) Approx 5 - 10% of epistaxis arise from the post. nasal cavity, in an area k/a Woodruff’s plexus. Woodruff's plexus is located over the post. middle turbinate and is primarily made up of connection of branches of the int. maxillary artery, namely, the post. nasal, sphenopalate, and ascending pharyngeal arteries. Posterior bleeds usually originate from the lateral wall and more rarely from the nasal septum.