Question 1

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

Accepted Answer

A) True 
 B)False  True

Question 2

The __________ ethmoid sinuses are located within the ethmoid bulla.

Accepted Answer

middle
The middle ethmoid sinuses,also called the middle ethmoid air cells,are located within the ethmoid bulla.Like the anterior ethmoids,the middle ethmoids are also located in the base of the middle nasal concha.

Question 3

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

Accepted Answer

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

Question 4

Under normal circumstances,sinuses are filled with

Accepted Answer

A)  fluid 
B)  blood 
C)  air 
D)  bones of the cranium 
A)  fluid 
B)  blood 
C)  air 
D)  bones of the cranium

Question 5

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.

Accepted Answer

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

Question 6

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

Accepted Answer

maxillary
An area of concern is the rela

Question 7

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

Accepted Answer

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. 
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 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.

Accepted Answer

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

Question 9

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

Accepted Answer

A) True 
 B)False

Question 10

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.

Accepted Answer

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

Question 11

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

Accepted Answer

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. 
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 12

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

Accepted Answer

ethmoid
The ethmoid sinuses,fr

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.

Accepted Answer

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

Accepted Answer

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 
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 15

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

Accepted Answer

A)  premolars 
B)  first molar 
C)  second molar 
D)  third molar 
A)  premolars 
B)  first molar 
C)  second molar 
D)  third molar

Question 16

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

Accepted Answer

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

Question 17

The most posterior-superior part of the nasal cavity is

Accepted Answer

A)  where the ethmoid meets the sphenoid bone. 
B)  the choana. 
C)  the superior nasal concha. 
D)  the ethmoid bulla. 
A)  where the ethmoid meets the sphenoid bone. 
B)  the choana. 
C)  the superior nasal concha. 
D)  the ethmoid bulla.

Question 18

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

Accepted Answer

A) True 
 B)False

Question 19

The area underneath each concha is known as a __________.

Accepted Answer

meatus
The area of the lateral

Question 20

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

Accepted Answer

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. 
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.

Exam 27: Nose, Nasal Cavity, and Paranasal Sinuses

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

The __________ ethmoid sinuses are located within the ethmoid bulla.

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

Under normal circumstances,sinuses are filled with

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.

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

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

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

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

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.

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

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

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.

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

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

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

The most posterior-superior part of the nasal cavity is

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

The area underneath each concha is known as a __________.

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

Oral Cavity

The Tooth: Functions and Terms

Fundamental and Preventive Curvatures

Dentition

Development, form, and Eruption

Occlusion

Dental Anomalies

Supporting Structures

Clinical Considerations

Tooth Identification

Root Morphology

Incisors

Canines

Premolars

Molars

Deciduous Dentition

Basic Tissues

Development of Orofacial Complex

Dental Lamina and Enamel Organ

Enamel, Dentin, and Pulp

Root Formation and Attachment Apparatus

Eruption and Shedding of Teeth

Oral Mucous Membrane

The Tongue

Histology of the Salivary Glands

Osteology of the Skull

Muscles of Mastication, Hyoid Muscles, and Sternocleidomastoid and Trapezius Muscles

Tempo-romandibular Joint

Muscles of Facial Expression

Soft Palate and Pharynx

Arterial Supply and Venous Drainage

Salivary Glands

Nervous System

Lymphatics and Spread of Dental Infection

Anatomical Considerations of Local Anesthesia

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