Deck 27: Nose, Nasal Cavity, and Paranasal Sinuses

Question 1

The vomer and ethmoid bones form the main part of the nasal septum.

Answer 1

True
A portion of the ethmoid bone and the vomer bone form the septum as well as the fibrocartilaginous part of the septum.

Question 2

The ethmoid sinuses are frequently called the paranasal sinuses because they are not single-paired sinuses but are divided into numerous small compartments.

A) Both the statement and the reason are correct and related.
B) Both the statement and the reason are correct but are NOT related.
C) The statement is correct, but the reason is NOT correct.
D) The statement is NOT correct, but the reason is correct.
E) NEITHER the statement NOR the reason is correct.

Answer 2

D
The ethmoid sinuses are frequently called the ethmoid air cells. They are not single-paired like the other paranasal sinuses but are subdivided into compartments called the anterior, middle, and posterior ethmoid air cells.

Question 3

Under normal circumstances, sinuses are filled with

A) Fluid
B) Blood
C) Air
D) Bones of the cranium

Answer 3

C
The sinuses are hollow cavities that function to lighten the overall bone weight. When they become irritated or infected they fill with inflammatory fluid as a result of mucous edema.

Question 4

The maxillary sinuses are the smallest of the paranasal sinuses. At birth each maxillary sinus is the size of a small pea.

A) Both statements are true.
B) The first statement is true; the second is false.
C) The first statement is false; the second is true.
D) Both statements are false.

Question 5

The lateral margin of the external nose is known as an ala.

Question 6

The respiratory epithelium in the roof of the nasal cavity, upper surfaces of both the superior concha, and nasal septum is modified. This tissue has nerve fibers that can perceive odors.

A) Both statements are true.
B) The first statement is true; the second is false.
C) The first statement is false; the second is true.
D) Both statements are false.

Question 7

In a young adult, the maxillary sinus generally lies between the maxillary canine and the

A) Premolars
B) First molar
C) Second molar
D) Third molar

Question 8

Most of the openings into the nasal cavity from other areas are known as the sphenoid sinuses. There are four pairs of paranasal sinuses.

A) Both statements are true.
B) The first statement is true; the second is false.
C) The first statement is false; the second is true.
D) Both statements are false.

Question 9

Each of the following is true of the maxillary sinus EXCEPT one. Which is the EXCEPTION?

A) The maxillary sinuses are the largest of the paranasal sinuses.
B) The maxillary sinuses open into the posterior end of the hiatus semilunaris through one or more openings.
C) The superior border of the maxillary sinus is the floor of the orbit.
D) The maxillary sinus is one anatomic structure that almost never varies among individuals.
E) During a nasal infection swelling occurs in the nasal mucosa.

Question 10

Each of the following has a role in trapping contaminants that enter the nasal cavity EXCEPT one. Which one is the EXCEPTION?

A) Cilia
B) Mucous
C) Goblet cells
D) Olfactory epithelium
E) All of the above help to trap contaminants.

Question 11

The opening of the maxillary sinus in the middle meatus region is located at approximately

A) The floor of the sinus
B) The floor of the orbital cavity
C) One-third upward toward the medial wall
D) Two-thirds upward toward the medial wall
E) None of the above

Question 12

The lateral walls of the nasal cavity are formed by the inferior concha(e). The point where the ethmoid bone and the maxillae meet in the lateral wall is called the superior nasal concha.

A) Both statements are true.
B) The first statement is true; the second is false.
C) The first statement is false; the second is true.
D) Both statements are false.

Question 13

The major role of sinus cavities is warming the air that flows into the respiratory system because the air passes over the cilia, which have an increased internal temperature.

A) Both the statement and the reason are correct and related.
B) Both the statement and the reason are correct but are NOT related.
C) The statement is correct, but the reason is NOT correct.
D) The statement is NOT correct, but the reason is correct.
E) NEITHER the statement NOR the reason is correct.

Question 14

The deeper sinuses, particularly the ethmoid, are most commonly involved in sinus infections that are difficult to localize. A new opening can be surgically created to assist with proper drainage. Note that the maxillary sinuses, while not as deep, commonly become infected.

A) Both statements are true.
B) The first statement is true; the second is false.
C) The first statement is false; the second is true.
D) Both statements are false.

Question 15

Which is LEAST likely to interfere with the floor of the maxillary sinus during the extraction of a maxillary molar?

A) Impacted third molars
B) A dilacerated root on a second molar
C) A close relationship between the floor of the sinus to posterior root apices
D) A microdont molar

Question 16

The crescent-shaped groove within the middle nasal concha is the

A) Sphenoethmoid recess
B) Hiatus semilunaris
C) Ethmoid bulla
D) Nasal aperture

Question 17

Infections of the frontal sinuses can cause pressure and pain just above the eye because these sinuses are located just above the orbital cavity.

A) Both the statement and the reason are correct and related.
B) Both the statement and the reason are correct but are NOT related.
C) The statement is correct, but the reason is NOT correct.
D) The statement is NOT correct, but the reason is correct.
E) NEITHER the statement NOR the reason is correct.

Question 18

The most complicated portion of the nasal cavity is its lateral walls because the upper half to two-thirds is formed by parts of the ethmoid bone and the lower part is formed by portions of the mandible.

A) Both the statement and the reason are correct and related.
B) Both the statement and the reason are correct but are NOT related.
C) The statement is correct, but the reason is NOT correct.
D) The statement is NOT correct, but the reason is correct.
E) NEITHER the statement NOR the reason is correct.

Question 19

The celia have hairlike projections that perceive odors because they are located within the olfactory epithelium.

A) Both the statement and the reason are correct and related.
B) Both the statement and the reason are correct but are NOT related.
C) The statement is correct, but the reason is NOT correct.
D) The statement is NOT correct, but the reason is correct.
E) NEITHER the statement NOR the reason is correct.

Question 20

The most posterior-superior part of the nasal cavity is

A) Where the ethmoid meets the sphenoid bone
B) The choana
C) The superior nasal concha
D) The ethmoid bulla

Question 21

The maxillae and the ethmoid form the interior portion of the floor of the nasal cavity.

Question 22

The __________ ethmoid sinuses are located within the ethmoid bulla.

Question 23

It is possible that a periapical infection of a tooth may involve the _______sinus.

Question 24

The sinuses that are subdivided into numerous small compartments are the ______ sinuses.

Question 25

Both the anterior and middle ethmoid sinuses are located in the meatus of the superior nasal concha.

Question 26

Pain over the eye is most likely caused by infection in the ___________ sinus.

Question 27

The pituitary fossa is located above the sphenoid sinuses.

Question 28

The area underneath each concha is known as a __________.