College of Massage Therapists of British Columbia (CMTBC) Practice Exam

Does the risorius attach to the modiolus?

1. Yes

2. No

3. Only in certain expressions

4. Only in males

The correct answer is: Yes

The risorius muscle does indeed attach to the modiolus, which is a fibrous junction in the corner of the mouth where several facial muscles converge. This connection allows the risorius to play a vital role in the facial expressions, particularly in pulling the corners of the mouth laterally. The modiolus functions as an anchor point for facial muscles and facilitates the movement involved in smiling or grimacing. Recognizing the relationship between the risorius and the modiolus is important, as it underscores how the dynamics of facial expression are anatomically supported. The attachment to the modiolus allows for coordinated movements of the mouth and enhances the expression of emotions, contributing to effective non-verbal communication. The other options do not reflect the anatomical reality of the risorius muscle's attachment; this connection is a constant feature irrespective of the situation, expression, or gender. Therefore, the relationship between the risorius and the modiolus remains consistent across different contexts.