Question 1

The larynx moves up and down during swallowing.The thyrohyoid muscle pulls the larynx down.

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. B

Question 2

The floor of the mouth is formed by which muscle?

Accepted Answer

A)  Stylohyoid 
B)  Geniohyoid 
C)  Mylohyoid 
D)  Digastric 
A)  Stylohyoid 
B)  Geniohyoid 
C)  Mylohyoid 
D)  Digastric C

Question 3

All muscles of mastication insert into the disk of the TMJ.Blood supply to these muscles comes from the maxillary artery,which is a branch of the carotid.

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

Hyoid muscles located above the hyoid bone are called suprahyoid muscles.When contracted,most muscles of this group elevate the mandible.

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 5

The hyoid bone,a portion of the zygomatic arch,is unusual because it articulates with no other bone.

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 6

Muscles of mastication are innervated by the fifth cranial nerve because they develop from the first (mandibular)pharyngeal arch.

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 7

The shape of the hyoid bone resembles a

Accepted Answer

A)  circle 
B)  straight line 
C)  triangle 
D)  horseshoe 
A)  circle 
B)  straight line 
C)  triangle 
D)  horseshoe

Question 8

The insertion of a muscle is attached to the more movable structure.

Accepted Answer

A) True 
 B)False

Question 9

All muscles of mastication are attached to an area of the mandible.

Accepted Answer

A) True 
 B)False

Question 10

Which muscle of mastication fans out widely at its origin?

Accepted Answer

A)  Masseter 
B)  Temporal 
C)  Medial pterygoid 
D)  Lateral pterygoid 
A)  Masseter 
B)  Temporal 
C)  Medial pterygoid 
D)  Lateral pterygoid

Question 11

The sternocleidomastoid muscle has an origin at the superior border of the scapula.When muscle contracts it pulls the hyoid bone down.

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 12

The mylohyoid muscle originates from the mylohyoid line on the medial surface of each side of the maxilla.The left and right muscles fuse into what is known as a raphe.

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 13

The sternocleidomastoid muscle is innervated by which cranial nerve?

Accepted Answer

A)  Fifth 
B)  Seventh 
C)  Tenth 
D)  Eleventh 
A)  Fifth 
B)  Seventh 
C)  Tenth 
D)  Eleventh

Question 14

The masseter muscle is probably the most powerful of muscles of suprahyoid group.When the masseter contracts,it elevates the mandible,which closes the mouth.

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 15

Which muscle originates in the upper sternum and inserts into the thyroid cartilage?

Accepted Answer

A)  Sternohyoid 
B)  Sternothyroid 
C)  Thyrohyoid 
D)  Sternocleidomastoid 
A)  Sternohyoid 
B)  Sternothyroid 
C)  Thyrohyoid 
D)  Sternocleidomastoid

Question 16

Each of the following is a muscle of the suprahyoid group EXCEPT one.Which one is the EXCEPTION?

Accepted Answer

A)  Digastric 
B)  Geniohyoid 
C)  Mylohyoid 
D)  Thyrohyoid 
A)  Digastric 
B)  Geniohyoid 
C)  Mylohyoid 
D)  Thyrohyoid

Question 17

The suprahyoid muscles are innervated by cranial nerves.

Accepted Answer

A) True 
 B)False

Question 18

The temporal muscle has a very narrow origin.Contraction of the entire temporalis elevates the mandible.

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 19

Involuntary contraction and spasms of the sternomastoid and trapezius muscles can be caused by migraine headaches.Some malocclusions can also cause such spasms.

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 20

The lateral pterygoid performs each of the following actions upon the mandible EXCEPT one.Which one is the EXCEPTION?

Accepted Answer

A)  Depression 
B)  Protrusion 
C)  Retrusion 
D)  Lateral movement 
A)  Depression 
B)  Protrusion 
C)  Retrusion 
D)  Lateral movement

Exam 28: Muscles of Mastication, Hyoid Muscles, and Sternocleidomastoid and Trapezius Muscles

The larynx moves up and down during swallowing.The thyrohyoid muscle pulls the larynx down.

The floor of the mouth is formed by which muscle?

All muscles of mastication insert into the disk of the TMJ.Blood supply to these muscles comes from the maxillary artery,which is a branch of the carotid.

Hyoid muscles located above the hyoid bone are called suprahyoid muscles.When contracted,most muscles of this group elevate the mandible.

The hyoid bone,a portion of the zygomatic arch,is unusual because it articulates with no other bone.

Muscles of mastication are innervated by the fifth cranial nerve because they develop from the first (mandibular)pharyngeal arch.

The shape of the hyoid bone resembles a

The insertion of a muscle is attached to the more movable structure.

All muscles of mastication are attached to an area of the mandible.

Which muscle of mastication fans out widely at its origin?

The sternocleidomastoid muscle has an origin at the superior border of the scapula.When muscle contracts it pulls the hyoid bone down.

The mylohyoid muscle originates from the mylohyoid line on the medial surface of each side of the maxilla.The left and right muscles fuse into what is known as a raphe.

The sternocleidomastoid muscle is innervated by which cranial nerve?

The masseter muscle is probably the most powerful of muscles of suprahyoid group.When the masseter contracts,it elevates the mandible,which closes the mouth.

Which muscle originates in the upper sternum and inserts into the thyroid cartilage?

Each of the following is a muscle of the suprahyoid group EXCEPT one.Which one is the EXCEPTION?

The suprahyoid muscles are innervated by cranial nerves.

The temporal muscle has a very narrow origin.Contraction of the entire temporalis elevates the mandible.

Involuntary contraction and spasms of the sternomastoid and trapezius muscles can be caused by migraine headaches.Some malocclusions can also cause such spasms.

The lateral pterygoid performs each of the following actions upon the mandible EXCEPT one.Which one is the EXCEPTION?

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

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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