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
The Sphenopalatine foramen is formed by all of the following structures, EXCEPT? 
Select and explain. 
A. Vomer, B. Palatine bone, C. Sphenoid bone, D. Sphenopalatine notch
A: Vomer
Answer: A: Vomer 
Explanation: Sphenopalatine foramen is formed by the junction of the sphenopalatine incisure of the palatine bone with the sphenoid bone, located immediately posterior to the middle turbinate. This is the principal foramen through which branches of the sphenopalatine aery and maxillary nerve pass from the pterygopalatine fossa into the nasal cavity.