INBDE (Integrated National Board Dental Examination) Practice Exam

The Buccinator attaches below to which structures?

1. Modiolus and pterygomandibular raphe

2. Buccal shelf and genioglossus

3. Pterygomandibular raphe and genioglossus

4. Buccal shelf and external oblique ridge

The correct answer is: Buccal shelf and external oblique ridge

The Buccinator is a muscle that helps with chewing and is located in the cheek area, attaching to various structures in the mouth and cheek. The Buccinator attaches below to the buccal shelf, which is the horizontal bony ridge on the cheek side of the jawbone, and the external oblique ridge, which is the slanted bony ridge on the outer edge of the jawbone. Option A is incorrect because the Modiolus is a fibrous tissue at the corner of the mouth and the pterygomandibular raphe is a fibrous tissue in the mouth that connects the medial pterygoid muscle to the buccinator muscle, but neither of these structures at the attachment point for the Buccinator muscle. Option B is incorrect because the buccal shelf and genioglossus are not structures that the Buccinator attaches to. Option C is incorrect because the pterygomandibular raphe and genioglossus are not structures that the Buccinator attaches to. Therefore, the correct answer is D.