The head has been extended. As a result the superimposed shadow of the base of the skull has obscured the upper three cervical vertebrae. Structural details of the transverse processes and articular processes of the cervical vertebrae are indistinct because of the overlapping of multiple shadows. The cavities of the larynx and trachea are outlined by their content of air. The conus elasticus of the larynx is indicated at 5. This film was obtained through the courtesy of Dr. Melvin J. Figley.
Mastoid process
Angle of mandible
Area of overlapping shadows of articular processes and transverse processes
Body of vertebra C. V (pointers indicate upper and lower borders of body)
Trachea (pointer indicates wall of air-filled conus elasticus)
Transverse foramen
Upper pointer: Spinous process vertebra C. Vll Lower pointer: Lamina (arch of vertebra) C. VII
Transverse process vertebra T. I
Rib I
Left pointer: Rib II Right pointer: Clavicle (in foreground)