This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
Kiesselbach area is formed by: 
Select and explain. 
A. Sphenopalatine artery and superior labial artery, B. Sphenopalatine and anterior ethmoidal artery, C. Anterior ethmoidal artery and posterior ethmoidal artery, D. Anterior ethmoidal artery and superior labial artery
A: Sphenopalatine artery and superior labial artery
Answer: A: Sphenopalatine artery and superior labial artery 
Explanation: The anteroinferior part or vestibule of the septum contains anastomoses between the septal ramus of the superior labial branch of the facial artery, branch of sphenopalatine artery, and of anterior ethmoidal artery. These form a large capillary network called the Kiesselbach's plexus. This is a common site of bleeding from the nose or epistaxis, and is known a Little's area.
(Ref: BD Chaurasia Vol III; ed: 6th Pg: 241)