Exam 20: Skull, Facial Bones, and Paranasal Sinuses

At which level will the central ray be placed for the SMV projection of the zygomatic arches?

Which projections will demonstrate the ethmoidal sinuses? 1)Lateral 2)PA axial (Caldwell) 3)SMV

For a lateral projection of the facial bones, the central ray will enter:

Which line is placed perpendicular to the plane of the image receptor for the AP axial projection of the zygomatic arches?

The letter A in the image below of the paranasal sinuses labels the:

Which plane of the head is placed parallel to the plane of the image receptor for a lateral projection of the skull?

Which of the following is placed perpendicular to the front edge of the IR for a lateral projection of the facial bones?

All of the following are facial bones except the:

How many bones compose the bony orbit?

The part of the cranial base identified in the figure below is the:

The vestibulocochlear organ is the organ of: 1)hearing. 2)sensation. 3)balance.

The figure below demonstrates the _____ method.

Which method of examining the skull will demonstrate the petrous ridges in the orbits, the ethmoid and frontal sinuses, and the crista galli?

The thickest and densest portion of bone in the cranium is the _____ bone.

Where are the petrous ridges seen on an image of a parietoacanthial (Waters method) projection of the paranasal sinuses?

To successfully demonstrate the ethmoidal and sphenoidal sinuses on the SMV projection, which of the following must occur? 1)The patient must be recumbent. 2)The infraorbitomeatal line must be parallel with the IR. 3)The central ray must be perpendicular to the infraorbitomeatal line and horizontal.

The central-ray angle for the PA axial (Caldwell) projection of the skull is:

Which reference line is perpendicular to the IR for the PA and PA axial mandibular rami?

For a lateral projection of the paranasal sinuses the central ray is directed:

The letter C in the image below of the paranasal sinuses labels the: