Delights Test Banks 1
Bontrager’s Radiographic Positioning & Anatomy: Expert-
Level Test Bank with Clear, Detailed Explanations
Chapters 11–20! (2025 Edition)
, Delights Test Banks 2
Chapter 11: Cranium — Expert-Level MCQs with Detailed Explanations
Section A: Multiple Choice Questions (with Answers & Explanations)
1. Which cranial bone forms the forehead and the superior part of the
orbital cavity?
A. Parietal
B. Frontal
C. Ethmoid
D. Sphenoid
Answer: B. Frontal
Explanation: The frontal bone forms the forehead and the superior portions of
the orbits (eye sockets).
2. The sella turcica, housing the pituitary gland, is part of which bone?
A. Frontal
B. Temporal
C. Ethmoid
D. Sphenoid
Answer: D. Sphenoid
Explanation: The sella turcica is a saddle-shaped depression in the sphenoid
bone that holds the pituitary gland.
, Delights Test Banks 3
3. Which positioning line is commonly used for lateral skull projections?
A. Infraorbitomeatal line (IOML)
B. Mentomeatal line (MML)
C. Interpupillary line
D. Acanthiomeatal line
Answer: C. Interpupillary line
Explanation: The interpupillary line must be perpendicular to the image
receptor for accurate lateral skull positioning.
4. What is the correct CR (central ray) angle for an AP axial (Towne)
projection of the skull using the OML?
A. 15° caudad
B. 25° cephalad
C. 30° caudad
D. 40° caudad
Answer: C. 30° caudad
Explanation: For the AP axial Towne projection, a 30° caudad angle is used
with the OML; 37° is used with the IOML.
, Delights Test Banks 4
5. The cranial sutures are classified as which type of joint?
A. Synovial
B. Cartilaginous
C. Fibrous
D. Amphiarthrodial
Answer: C. Fibrous
Explanation: Sutures are fibrous joints, immovable in adults, connecting the
bones of the cranium.
6. Which projection best demonstrates the occipital bone?
A. Lateral skull
B. PA Caldwell
C. AP axial (Towne)
D. SMV (Submentovertex)
Answer: C. AP axial (Towne)
Explanation: The AP axial (Towne) projection elongates and clearly
demonstrates the occipital bone.
7. Which skull type is considered average in shape?
A. Dolichocephalic
B. Brachycephalic
Bontrager’s Radiographic Positioning & Anatomy: Expert-
Level Test Bank with Clear, Detailed Explanations
Chapters 11–20! (2025 Edition)
, Delights Test Banks 2
Chapter 11: Cranium — Expert-Level MCQs with Detailed Explanations
Section A: Multiple Choice Questions (with Answers & Explanations)
1. Which cranial bone forms the forehead and the superior part of the
orbital cavity?
A. Parietal
B. Frontal
C. Ethmoid
D. Sphenoid
Answer: B. Frontal
Explanation: The frontal bone forms the forehead and the superior portions of
the orbits (eye sockets).
2. The sella turcica, housing the pituitary gland, is part of which bone?
A. Frontal
B. Temporal
C. Ethmoid
D. Sphenoid
Answer: D. Sphenoid
Explanation: The sella turcica is a saddle-shaped depression in the sphenoid
bone that holds the pituitary gland.
, Delights Test Banks 3
3. Which positioning line is commonly used for lateral skull projections?
A. Infraorbitomeatal line (IOML)
B. Mentomeatal line (MML)
C. Interpupillary line
D. Acanthiomeatal line
Answer: C. Interpupillary line
Explanation: The interpupillary line must be perpendicular to the image
receptor for accurate lateral skull positioning.
4. What is the correct CR (central ray) angle for an AP axial (Towne)
projection of the skull using the OML?
A. 15° caudad
B. 25° cephalad
C. 30° caudad
D. 40° caudad
Answer: C. 30° caudad
Explanation: For the AP axial Towne projection, a 30° caudad angle is used
with the OML; 37° is used with the IOML.
, Delights Test Banks 4
5. The cranial sutures are classified as which type of joint?
A. Synovial
B. Cartilaginous
C. Fibrous
D. Amphiarthrodial
Answer: C. Fibrous
Explanation: Sutures are fibrous joints, immovable in adults, connecting the
bones of the cranium.
6. Which projection best demonstrates the occipital bone?
A. Lateral skull
B. PA Caldwell
C. AP axial (Towne)
D. SMV (Submentovertex)
Answer: C. AP axial (Towne)
Explanation: The AP axial (Towne) projection elongates and clearly
demonstrates the occipital bone.
7. Which skull type is considered average in shape?
A. Dolichocephalic
B. Brachycephalic
