Modiolus around the corner of mouth is formed by all EXCEPT:

 # Modiolus around the corner of mouth is formed by all EXCEPT:

A. Orbicularis oris

B. Buccinator

C. Risorius

D. Mentalis

The correct answer is: D. Mentalis.

The modiolus is a chiasma of facial muscles held together by fibrous tissue, located lateral and slightly superior to each angle of the mouth. It is contributed to by the following muscles: Orbicularis oris, Buccinator, levator anguli oris, depressor anguli oris, zygomaticus major, risorius, quadratus labii superioris, quadratus labii inferioris. 

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