Refer to the illustration of the landmarks of the cranium below.  The glabellomeatal line is represented by which numbered structure? Lat 2(4).jpg

Which sinus group is of primary importance in the lateral projection of the sinuses?

The central ray for the PA axial (Haas) projection should be directed to enter:

What projection is demonstrated in the following radiograph? 020148.jpg cropped.jpg

Where are the petrous ridges seen on the Waters method of the sinuses?

The central ray should be perpendicular to which of the following lines for the SMV of the mandible?

What is the central ray angulation for the axiolateral or axiolateral oblique projection of the mandible to demonstrate the ramus or body?

Which of the following should be clearly demonstrated on the following projection of the paranasal sinuses? 022010B with paint.jpg all four sinus groups superimposed orbital roofs superimposed mandibular rami

Where should the central ray be directed for the SMV of the mandible?

Which of the following lines is placed parallel with the transverse axis of the IR for the axiolateral oblique projection of the TMJ articulations?