This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Anatomy
All are seen in norma basalis except 
Select and explain. 
A. Mental foramen, B. Foramen magnum, C. Foramen ovale, D. Foramen Lacerum
A: Mental foramen
Answer: A: Mental foramen 
Explanation: The foramen passing through norma basalis are; 1.Greater palatine foramen 2.Lesser palatine foramen 3.Foramen spinosum 4.Foramen ovale 5.Emissary sphenoidal foramen or foramen of Vesalius 6.Foramen lacerum 7.Jugular foramen 8.Foramen magnum NOTES: Mental foramen is present on the outer surface of the mandible. The mental foramen lies below the interval between the premolar teeth. Ref BDC volume3,Sixth edition pg 13