This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nose and paranasal sinuses, Subject name: ENT
Kisselbach's plexus is formed by septal branches of all expect 
Select and explain. 
A. Posterior ethmoidal aery, B. Anterior ethmoidal aery, C. Sphenopalatine aery, D. Greater palatine aery
A: Posterior ethmoidal aery
Answer: A: Posterior ethmoidal aery 
Explanation: Kiesselbach's Plexus: Aerial plexus of Little's area Formed by s Septal branches of Anterior ethmoidal Superior labial Sphenopalatine Greater palatine aery Ref: Dhingra 7e pg 197.