Kiesselbach's plexus, which lies in Kiesselbach's area, Kiesselbach's triangle, or Little's area, is a region in the anteroinferior part of the nasal septum where four arteries anastomose to form a vascular plexus. The arteries are:
- Anterior ethmoidal artery (branch of the ophthalmic artery)
- Sphenopalatine artery (terminal branch of the maxillary artery)
- Greater palatine artery (from the maxillary artery)
- Septal branch of the superior labial artery (from the facial artery)
It runs vertically downwards just behind the columella, crosses the floor of the nose and joins venous plexus on the lateral nasal wall. It is a common site for bleeding in young people.
Ninety percent of nose bleeds (epistaxis) occur in Little's area, as it is exposed to the drying effect of inspiratory currents and to finger nail trauma and is the usual site for epistaxis in children and young adults.
- Moore, Keith L. et al. (2014) Clinically Oriented Anatomy, 7th Ed, p.959
- Dhingra. Diseases of Ear,Nose and Throat. Elsevier.
- Doyle, DE (Mar 1986). "Anterior epistaxis: a new nasal tampon for fast, effective control.". The Laryngoscope. 96 (3): 279–81. PMID 3951304. doi:10.1288/00005537-198603000-00008.
- Nasal Anatomy at eMedicine
- Analysis of Epistaxis in Pregnancy, Little, J. L.: A hitherto undescribed lesion as a cause of epistaxis, with 4 cases, Hosp. Gaz., 6:5, March-Dec. 1879.