Location: Found in the anteroinferior part of the nasal septum.
It is a confluence of four arteries-
1. Anterior ethmoidal artery
2. Sphenopalatine artery (aka artery of epistaxis)
3. Greater palatine artery
4. Superior labial artery
Clinical significance: Due to its rich blood supply, it is the most common site of anterior epistaxis (nosebleeds).
NOTE: The sphenopalatine artery is called the "artery of epistaxis" because it is the primary blood supply to the posterior nasal cavity and a common source of severe posterior nosebleeds.