Common sites of bleeding are: (PGI June 2008)

Ans, B. (Little's area] Little's area or kiesselbach's plexus Q - This is the vascular area in the antero inferior part of nasal septum. It is the commonest1-1 site for epistaxis.Arteries Involved in Kisselbach's Plexus Formation"Four arteri es-anterior ethmoidal, septal branch of superior labialQ, septal branch of sphenopalatine1'1 & the greater palatine1 anastomose to form a vascular plexus called kisselbach's plexus"- P.L Dhingra 4th/166According to LT other arteries involved beside above four are-posterior ethmoidal artery, infra orbital artery, superior dental artery & pharyngeal branch of maxillary artery.According to maqbool-there are four arteries involved as like Dhingra.So, from above discussion it is clear that posterior ethmoidal artery should not mark as correct option because in PG1 it is better to leave it there is confusion. Even Scott & Brown could not help.Little s AreaIt is situated in the antero- inferior part of nasal septum just above the vertibule.This area is exposed to the drying effect of inspiratory current and to fingernail trauma & is the usual site for epistaxis in children & young adults.Also the site for origin of the bleeding polypus (haemangioma) of nasal septum.Woodruffs AreaThis vascular area is situated under the posterior end of inferior turbinate where sphenopalatine artery anastomoses with posterior pharyngeal artery. Posterior epistaxis may occur in this area.Fig. Blood supply of nasal septum.