Radiology study guide

Question 1

Radiolucent

Answer 1

Structures that are less dense and PERMIT the x-ray beam to pass through them.

appear dark & black in a image

Question 2

Radiopaque

Answer 2

Structures that are dense and resist the PASSAGE of x-rays.

appear light & white in a image

Question 3

Anterior nasal spine

Answer 3

V- shaped structure in the maxilla that intersects the floor of the nasal cavity and the nasal septum.

radiopaque

Question 4

External auditory meatus
(audio-hear-ear)

Answer 4

round passage way to the ear

radiolucent

Question 5

Genial tubercle

Answer 5

round/oval structure inferior to the mandibular incisors.

radiopaque

Question 6

Hard palate

Answer 6

horizontal Bony structure that separates the nasal cavity from the oral cavity

radiopaque

Question 7

Internal oblique ridge

Answer 7

A radiopaque structure which is located on the internal surface of the mandible and proceeds downward to become the mylohyoid ridge ( BILATERAL )

Question 8

Maxillary sinus

Answer 8

radiolucent area located above the apices of the maxillary premolars and molars.

The floor of the max. sinus often appears as thin wavy r.paque line

Question 9

Mand. Canal

Answer 9

pathway in bone where the inferior alveolar nerve and blood vessels course through the mandible.
Radiopaque

Question 10

NASAL FOSSAE

Answer 10

The nasal openings that are located over the max.

Question 11

NASAL SEPTUM

Answer 11

THE BONE THAT SEPERATES THE NASAL CAVITY INTO LEFT & RIGHT CHAMBERS

Question 12

INFERIOR NASAL CONCHA

Answer 12

INFERIOR (INSIDE) OF THE NASAL FOSSA LOCATED ON THE LATERAL WALLS OF THE NASAL CAVITY

Question 13

MID-PALATINE SUTURE
(MEDIAN PALATAL SUTURE)

Answer 13

INTERFACE OF THE TWO PREMAXILLA WHERE THEY COME TOGETHER.
Vertical Line

Question 14

INCISIVE FORAMEN

Answer 14

LOCATED ON THE MIDLINE ON THE LINGUAL SIDE OF THE HARD PALATE ABOVE CENTRAL INCISORS.
Round /oval

Question 15

LATERAL FOSSA

Answer 15

THE DIP DEPRESSION ON THE LABIAL SIDE OF THE MAXILLA AROUND THE LATERAL INCISORS ROOTS.
Diffuse

Question 16

INVERTED Y

Answer 16

WHERE THE NASSAL FOSSA AND AND THE MAX. SINUSES CROSSES. THE CROSS BETWEEN THE TWO CREATES A UPSIDE DOWN Y.
Upside down Y

Question 17

NASAL SOFT TISSUE

Answer 17

THE SOFT TISSUE OF THE NOSE . CAN BE SEEN OVER THE ROOF OF ANTERIOR PERIAPICAL PICS.

Question 18

MAX. SINUSES

Answer 18

RADIOLUCENT AIR-FILLED CAVITY IS LOCATED ABOVE THE POSTERIOR TEETH ON THE RIGHT AND LEFT SIDES OF THE MAX.
Horizontally Oblong

Question 19

Zygomatic Process

Answer 19

The process is positioned toward the midline while the bone extends posteriorly away from the midline
U shaped

Question 19

Zygomatic Bone

Answer 19

Check Bone/ on the right and left side of the the posterior max.
Quadrangular -shaped

Question 20

Max. Tuberosity

Answer 20

the rounded end of the alveolar process of the maxilla. The tuberosity curves upward at the end of the max.
Rounded

Question 20

Coronoid Process

Answer 20

is the process of the man. triangular bony portion of the anterosuperior aspect of the ramus.
Radiopaque
The only mandible structure recorded on max. molar periapical images.
Triangular

Question 21

Pterygoid plates

Answer 21

The lateral and medial pterygoid plates are behind the max. tuberosity.

Looks like a thin wing of a bone

Question 22

Hamular Process

Answer 22

Pterygoid hamulus/ a tiny finger of hook like projection of bone that extends inferiorly from the medial pterygoid plate.

Question 23

Ramus

Answer 23

vertical portion at each end of of mandible Radiopaque

Question 24

condyle of mandible

Answer 24

Ball like top of ramus which forms the hinge between temporal bone and mandible. Radiopaque

Question 25

Lingual Foramen

Answer 25

small pin-point opening in bone on the lingual aspect on the anterior mandible.

Question 26

Mental Fossa

Answer 26

a depression in the bone in the bone on the labial aspect of the mandible.

Question 27

Mental Ridge

Answer 27

prominence of bone on the labial surface of the anterior mandible.

Question 28

mental foramen

Answer 28

located below the roots of the mandible premolars.

Question 29

External oblique ridge

Answer 29

bony anterior border of the ramus located on the outer aspect of the mandible.

Question 30

Submandibular Fossa

Answer 30

a depression in bone on the lingual aspect of the posterior mandible. The fossa is located bilaterally below the internal oblique ridge

Question 31

Lower Border

Answer 31

appears as a radiopaque band of dense cortical bone demarcating the inferior aspect of the mandible.

Question 32

Nutrient Canals

Answer 32

passageways through bone that supply teeth.

Question 33

Alveolar Ridge

Answer 33

Bony ridge that contains alveoli (tooth sockets) Radiopaque

Question 34

Mental process

Answer 34

(upside down V) Line of bone on external surface of anterior mandible. Radiopaque

Question 35

Alveolar Bone

Answer 35

Bone that surrounds the tooth Radiopaque

Question 36

Apical Foramen

Answer 36

opening in apex of tooth