Radiographic Positioning And Related Anatomy Ch. 12 Sect. A

Front 1

Fill in the total number of bones.
A. Cranium _____ B. Facial Bones ______

Back 1

A. 8
B. 14

Front 2

List the four cranial bones that form the calvaria (skull cap).
A.
B.
C.
D.

Back 2

A. Frontal
B. Right Parietal
C. Left Parietal
D. Occipital

Front 3

List the four cranial bones that form the floor of the carium.
A.
B.
C.
D.

Back 3

A. Right Parietal
B. Left Parietal
C. Sphenoid
D. Ethmoid

Front 4

The small horizontal plate of the ethmoid seen in the above drawings is called ________.

Back 4

Cribiform Plate

Front 5

The vertical plate of the ethmoid bone forming the upper portion of the bony nasal septum is the _____________.

Back 5

Perpendicular Plate

Front 6

A structure found in the middle of the sphenoid bone that surrounds the pituitary gland is the ____________.

Back 6

Sella Turcica

Front 7

The posterior aspect of the sella turcica is called the __________.

Back 7

Dorsum sellae

Front 8

Which structure of the sphenoid bone allows for the passage of the optic nerve and is the actual opening into the orbit?

Back 8

Optic Foramen

Front 9

Which structure of the sphenoid bone help form part of the lateral walls of the nasal cavities?

Back 9

Medial and Lateral Pterygold Processes

Front 10

Which radiographic cranial position best demonstrates the sella turcica?

Back 10

Lateral

Front 11

Which aspect of the frontal bone forms the superior aspect of the orbit?

Back 11

Orbital or horizontal plate

Front 12

What are the four major sutures?

Back 12

A. Coronal
B. Squamosal
C. Lambdoidal
D. Sagittal

Front 13

Cranial sutures are classified as being ___________ joints.

Back 13

Fibrous or synarthroidal

Front 14

Small irregular bones that sometimes develop in adult skull sutures are called ________ or _______ bones and are most frequently found in the __________ suture.

Back 14

Sutural or wormian, lambdoidal

Front 15

Which term describes the superior rim of the orbit?

Back 15

Supraorbital Margin (SOM)

Front 16

What is the name of the notch that separates the orbital plates from each other?

Back 16

Ethmoidal Notch

Front 17

Which cranial bones form the upper lateral walls of the calvarium?

Back 17

Right and left parietals

Front 18

Which cranial bone contains the foramen magnum?

Back 18

Occipital

Front 19

A small prominence located on the squamous portion of the occipital bone is called the ________.

Back 19

External occipital portuberance

Front 20

What is the name of the oval processes found on the occipital bone that help form the occipito-atlantal joint?

Back 20

Occipital

Front 21

List the three aspects of the temporal bones
A.
B.
C.

Back 21

A.Squamous
B. Mastoid
C. Petrous

Front 22

T/F. The mastoid portion of the temporal bone is the densest of the three aspects of the temporal bone.

Back 22

Petrous portion

Front 23

Which external landmark corresponds with the level of the petrous ridge?

Back 23

TEA

Front 24

Which opening in the temporal bone serves as a passageway for nerves of hearing and equilibrium?

Back 24

Internal Acoustic Meatus