Question 1

The levator palpebrae superioris muscle is considered a muscle of the orbit because it is supplied by both the oculomotor and facial nerves.

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. C

Question 2

Which does NOT have a role in frowning (Select all that apply. )?

Accepted Answer

A)  Corrugator 
B)  Procerus 
C)  Mentalis 
D)  Buccinator C,D

Question 3

The dilator naris raises the nostrils.This muscle causes the nostrils to flare or dilate.

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 4

Muscle that arises from the superior nuchal line of the occipital bone and the mastoid area is the

Accepted Answer

A)  orbicularis oculi 
B)  occipital belly of the epicranius muscle 
C)  superior auricular 
D)  posterior auricular

Question 5

The mentalis muscle fibers originate in the mental foramen.These fibers terminate by inserting into the skin of the chin.

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 6

Muscles of the scalp move the scalp in a forward but not a backward movement.

Accepted Answer

A) True 
 B)False

Question 7

The orbicularis oris is probably the most important muscle of the mouth because in addition to its role in forming facial expressions,this muscle is also referred to as an accessory muscle of mastication.

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 8

Muscles grouped around the mouth do not influence tooth alignment because abnormal pressures from one muscle group are balanced by muscles of other groups.

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 9

Both the corrugator and the platysma pull the eyebrow up.The corrugator muscle has fibers that extend to the lateral part of the eyebrow,whereas the procerus has fibers that extend to the medial end of the eyebrow.

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

Which muscle plays a role in mastication?

Accepted Answer

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

Question 11

Which of the following can be influenced by abnormal pressure from muscles that surround the mouth (Select all that apply. )?

Accepted Answer

A)  Mastication 
B)  Facial expression 
C)  Ability to close eyelids 
D)  Raising the upper eyelid 
E)  Speech patterns

Question 12

All of muscles surrounding the oral cavity interlace with the orbicularis oris.

Accepted Answer

A) True 
 B)False

Question 13

Fibers of the mentalis muscle cross the midline.

Accepted Answer

A) True 
 B)False

Question 14

The epicranius muscle is known by what other name?

Accepted Answer

A)  Anterior auricular 
B)  Frontalis 
C)  Occipitofrontalis 
D)  Platysma

Question 15

The levator palpebrae superioris is not considered a facial nerve because it is not innervated by the facial nerve.

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 16

Which of the following are true of the buccinator muscle (Select all that apply. )?

Accepted Answer

A)  It is probably the most important muscle of the mouth. 
B)  It has no role in mastication. 
C)  It originates from the pterygomandibular raphe. 
D)  It originates from the buccal alveolar bone of maxillary molars. 
E)  It makes up the musculature of the cheek.

Question 17

The upper end of fibers of the platysma attach to the inferior border of the mandible.The platysma moves the skin over the neck,but it doesn't change the facial expression.

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 18

Which muscle originates from the lower rim of the orbit?

Accepted Answer

A)  Orbicularis oris 
B)  Procerus 
C)  Levator labii superioris 
D)  Levator anguli oris

Question 19

The action of the orbicularis oris is to close and compress the lips.

Accepted Answer

A) True 
 B)False

Question 20

The facial nerve innervates muscles of facial expression and mastication.The facial nerve is the fifth cranial nerve.

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 30: Muscles of Facial Expression

The levator palpebrae superioris muscle is considered a muscle of the orbit because it is supplied by both the oculomotor and facial nerves.

Which does NOT have a role in frowning (Select all that apply. ) ?

The dilator naris raises the nostrils.This muscle causes the nostrils to flare or dilate.

Muscle that arises from the superior nuchal line of the occipital bone and the mastoid area is the

The mentalis muscle fibers originate in the mental foramen.These fibers terminate by inserting into the skin of the chin.

Muscles of the scalp move the scalp in a forward but not a backward movement.

The orbicularis oris is probably the most important muscle of the mouth because in addition to its role in forming facial expressions,this muscle is also referred to as an accessory muscle of mastication.

Muscles grouped around the mouth do not influence tooth alignment because abnormal pressures from one muscle group are balanced by muscles of other groups.

Both the corrugator and the platysma pull the eyebrow up.The corrugator muscle has fibers that extend to the lateral part of the eyebrow,whereas the procerus has fibers that extend to the medial end of the eyebrow.

Which muscle plays a role in mastication?

Which of the following can be influenced by abnormal pressure from muscles that surround the mouth (Select all that apply. ) ?

All of muscles surrounding the oral cavity interlace with the orbicularis oris.

Fibers of the mentalis muscle cross the midline.

The epicranius muscle is known by what other name?

The levator palpebrae superioris is not considered a facial nerve because it is not innervated by the facial nerve.

Which of the following are true of the buccinator muscle (Select all that apply. ) ?

The upper end of fibers of the platysma attach to the inferior border of the mandible.The platysma moves the skin over the neck,but it doesn't change the facial expression.

Which muscle originates from the lower rim of the orbit?

The action of the orbicularis oris is to close and compress the lips.

The facial nerve innervates muscles of facial expression and mastication.The facial nerve is the fifth cranial nerve.