Exam 20: Skull, Facial Bones, and Paranasal Sinuses

For a lateral projection of the facial bones, the image receptor is centered to the:

The six areas of incomplete ossification in a newborn infant's skull are called the:

Which projection will best demonstrate the frontal and anterior ethmoidal sinuses? 1)PA 2)Parietoacanthial (Waters) 3)PA axial (Caldwell)

Which of the following is clearly demonstrated within the foramen magnum during an AP axial (Towne) projection of the skull? 1)Dorsum sellae 2)Sella turcica 3)Posterior clinoid processes

Both zygomatic arches can be demonstrated on one projection for which of the following projections? 1)Tangential 2)SMV 3)AP axial

What projection (method) is demonstrated in the image below used to evaluate the cranium?

Which of the following is located in the internal ear?

Letter F in the image below used to evaluate the cranium labels the:

The lateral projection of the facial bones clearly demonstrates:

Which drawing in the figure below demonstrates the correct head position for the Waters method?

Which of the following are included as functions of the sinuses? 1)Decrease the weight of the skull. 2)Warm and moisten inhaled air. 3)Provide a resonating chamber for voice.

The external landmark identified in the figure below is the:

Letter B in the image below used to evaluate the cranium labels the:

Letter D in the image below used to evaluate the cranium labels the:

Letter C in the diagram below of the orbit labels the:

For the Waters method for the facial bones, the orbitomeatal line is placed at what angle to the IR?

Which of the sinuses is developed at birth and visible radiographically?

The large aperture in the occipital bone, through which the medulla oblongata and spinal cord exit, is termed the:

Which of the following is(are) true regarding positioning for the Waters method for the facial bones? 1)The orbitomeatal line forms a 37-degree angle with the plane of the IR. 2)The mentomeatal line is perpendicular to the IR plane. 3)The coronal plane is perpendicular to the IR plane.

What projection (method) is demonstrated in the image below of the paranasal sinuses?