Question 1

The posterior auricular muscle can raise the ear.Fibers of this poorly developed muscle run forward.

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 2

Which muscle compresses the lips?

Accepted Answer

A)  Levator labii superioris 
B)  Depressor labii inferioris 
C)  Levator anguli superioris 
D)  Orbicularis oris 
A)  Levator labii superioris 
B)  Depressor labii inferioris 
C)  Levator anguli superioris 
D)  Orbicularis oris

Question 3

Fibers of the platysma run from the maxilla to just below the clavicle in a broad sheet.

Accepted Answer

A) True 
 B)False

Question 4

The orbicularis oculi raises the eyelids because fibers of this muscle attach to the medial and lateral borders of the orbit.

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 5

The risorius muscle pulls the corners of the mouth down as in a frown.

Accepted Answer

A) True 
 B)False

Question 6

Which muscle opens and closes the nostrils?

Accepted Answer

A)  Nasalis 
B)  Naris 
C)  Dilator naris 
D)  Compressor naris 
A)  Nasalis 
B)  Naris 
C)  Dilator naris 
D)  Compressor naris

Question 7

Muscle that originates from the pterygoid hamulus to the medial surface of the mandible at the posterior end of the mylohyoid line is the

Accepted Answer

A)  buccinator 
B)  levator labii superioris 
C)  depressor labii inferioris 
D)  orbicularis oris 
A)  buccinator 
B)  levator labii superioris 
C)  depressor labii inferioris 
D)  orbicularis oris

Question 8

The orbicularis oris and orbicularis oculi circle the oral cavity.Muscles of the orbicularis oculi circle the lips like a purse string.

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.

Exam 30: Muscles of Facial Expression

The posterior auricular muscle can raise the ear.Fibers of this poorly developed muscle run forward.

Which muscle compresses the lips?

Fibers of the platysma run from the maxilla to just below the clavicle in a broad sheet.

The orbicularis oculi raises the eyelids because fibers of this muscle attach to the medial and lateral borders of the orbit.

The risorius muscle pulls the corners of the mouth down as in a frown.

Which muscle opens and closes the nostrils?

Muscle that originates from the pterygoid hamulus to the medial surface of the mandible at the posterior end of the mylohyoid line is the

The orbicularis oris and orbicularis oculi circle the oral cavity.Muscles of the orbicularis oculi circle the lips like a purse string.

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

Nose, Nasal Cavity, and Paranasal Sinuses

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

Tempo-romandibular Joint

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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