Question 1

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.

Question 2

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

Accepted Answer

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

Question 3

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.

Question 4

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.

Question 5

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

Question 6

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. B

Question 7

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.

Question 8

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

Question 9

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.

Question 10

The suprahyoid muscles are innervated by cranial nerves.

Accepted Answer

A) True 
 B)False

Question 11

The sternocleidomastoid muscle is innervated by which cranial nerve?

Accepted Answer

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

Question 12

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

Accepted Answer

A) True 
 B)False

Question 13

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. C

Question 14

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.

Question 15

The shape of the hyoid bone resembles a

Accepted Answer

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

Question 16

The floor of the mouth is formed by which muscle?

Accepted Answer

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

Question 17

Which muscle of mastication fans out widely at its origin?

Accepted Answer

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

Question 18

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

Accepted Answer

A) True 
 B)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.

Question 20

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.

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

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedB

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The suprahyoid muscles are innervated by cranial nerves.

Correct AnswerverifiedShow Answer

The sternocleidomastoid muscle is innervated by which cranial nerve?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedC

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

Correct AnswerverifiedShow Answer

The shape of the hyoid bone resembles a

Correct AnswerverifiedShow Answer

The floor of the mouth is formed by which muscle?

Correct AnswerverifiedC

Which muscle of mastication fans out widely at its origin?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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B

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C

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C

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