What is the CR angulation for the AP axial projection of the zygomatic arches?

Methods of performing a double-contrast barium enema include: 1. enteroclysis; 2. single-stage procedure; 3. two-stage procedure

A PA projection of the stomach and duodenum can be performed using a 24×30 cm cassette.  Which of the following describes the plane that is centered to the grid for this projection?

            The part identified on the vertebrae above is the:

Functions of the gallbladder include:             1. store bile; 2. concentrate bile; 3. store cholecystokinin

The distal end of the common bile duct contains a sphincter that controls the bile entering into the duodenum.  This sphincter is termed the:

Which reference line is positioned perpendicular to the angled cassette for the PA axial (Caldwell method) projection of the sinuses?

The anatomy pointed out in the figure below is the:            

In a typically shaped head, the petrous pyramids project anteriorly and medially at what angle?

How much lower should the cassette be positioned when the upright position is used for projections of the stomach?