Sinuses test

Question 1

All of the following bones contain air sinuses

Answer 1

Frontal

Ethmoid

Sphenoid

Question 2

The maxillary sinus is located in which bone

Answer 2

Maxilla

Question 3

The largest sinus is the

Answer 3

Maxillary

Question 4

Which sinus is located immediately below the sella turcica

Answer 4

Sphenoidal

Question 5

The paranasal sinuses should always be examined in the upright position to

Answer 5

Demonstrate the presence or absence of fluid

Differentiate between fluid and other pathologic conditions

Question 6

For a lateral projection of the paranasal sinuses, the central ray is directed

Answer 6

1 inch posterior to the outer cantus

Question 7

All of the following should be clearly demonstrated on a lateral projection of the paranasal sinus

Answer 7

All four paranasal sinus groups

Sella turcica in profile

Superimposed orbital roofs

Question 8

Which projection will best demonstrate the frontal and anterior ethmoidal sinuses

Answer 8

PA Axial Caldwell

Question 9

When using the angled grid technique for the PA axial Caldwell method projection of the sinuses, the vertical grid device must be angled _____degrees

Answer 9

15

Question 10

Which of the following must be projected below the maxillary sinuses for the parietoacanthial projection of the sinuses

Answer 10

Petrous pyramids

Question 11

The parietoacanthial projection Waters method of the sinuses requires the orbitomeatal line to be placed how many degrees from the plane of the IR

Answer 11

37 degrees

Question 12

Which sinuses are projected through the mouth on the open mouth modification of the Waters method

Answer 12

Sphenoidal

Question 13

Which projection best demonstrates the maxillary sinuses

Answer 13

Parietoacanthial Waters

Question 14

For the open mouth modification of the waters method, the central ray should exit the

Answer 14

Acanthion

Question 15

At which level should the central ray enter the base of the skull for the SMV projection of the sinuses

Answer 15

1/2 in anterior to the level of the EAM

Question 16

All of these projections will demonstrate the ethmoidal sinuses

Answer 16

SMV

PA axial Caldwell

Lateral

Question 17

The respiration phase for all the projections of the facial bones and sinuses is

Answer 17

Suspended

Question 18

Which of the following are included as functions of the sinuses

Answer 18

Decrease the weight of the skull

Warm and moisten inhaled air

Provide a resonating chamber for the voice

Question 19

Which of the sinuses is developed at birth and visible radiographically

Answer 19

Maxillary

Question 20

The ethmoidal sinuses are located within which portion of the bone

Answer 20

Labyrinths

Question 21

Which reference line is positioned horizontally to ensure the proper extension of the head during a lateral projection of the sinuses

Answer 21

IOML

Question 22

Which reference line is positioned perpendicular to the angled image receptor for the PA axial Caldwell method projection of the sinuses

Answer 22

OML

Question 23

The central ray forms an angle of how many degrees with the OML for the PA axial Cladwell projection of the sinuses

Answer 23

15 degrees

Question 24

Which of the following reference lines is placed perpendicular to the Image receptor for a parietoacanthial Waters method projection

Answer 24

MML

Question 25

Where is the IR centered for the parietoacanthial Waters method projection of the sinuses

Answer 25

Acanthion

Question 26

Where are the petrous ridges seen on an image of a parietoacanthial Waters method projection of the paranasal sinuses

Answer 26

Inferior to the floor of the maxillary sinuses

Question 27

Which of the following foramina will be demonstrated in the orbit on a parietoacanthial Waters method radiograph

Answer 27

Rotundum

Question 28

The OML forms an angle of how many degrees from the plane of the IR for an open mouth parietoacanthial Waters method projection

Answer 28

37 degrees

Question 29

The central ray is directed perpendicular to which reference line for the SMV projection of the sinuses

Answer 29

IOML

Question 30

Which two must occur to successfully demonstrate the ethmoidal and sphenoidal sinuses on the SMV projection

Answer 30

IOML aligned parallel with the IR

Central ray aligned horizontal and enters perpendicular to the IOML