Deck 4: Muscular System

Question 1

Which of the following muscles when unilaterally contracted deviates the mandible to one side?

A)Masseter muscle
B)Lateral pterygoid muscle
C)Medial pterygoid muscle
D)Temporalis muscle

Answer 1

B

Question 2

Which of the following muscles BOTH elevates the tongue and depresses the soft palate during swallowing?

A)Levator veli palatini muscle
B)Palatoglossus muscle
C)Palatopharyngeal muscle
D)Muscle of the uvula

Answer 2

B

Question 3

The ______ of a muscle is generally attached to the LEAST movable structure.

A)insertion
B)origin
C)middle
D)beginning

Answer 3

B

Question 4

Which of the following muscles is considered an extrinsic tongue muscle that retracts the tongue?

A)Palatoglossus muscle
B)Inferior longitudinal muscle
C)Styloglossus muscle
D)Genioglossus muscle

Question 5

Which of the following muscles originates on the inferior border of the mandible and inserts into the skin tissue of the chin?

A)Depressor labii inferioris muscle
B)Mentalis muscle
C)Depressor anguli oris muscle
D)Orbicularis oris muscle

Question 6

Which of the following muscles will serve to depress the lower lip?

A)Depressor labii inferioris and depressor anguli oris muscles
B)Depressor labii inferioris and orbicularis oris muscles
C)Depressor labii inferioris and mentalis muscles
D)Depressor labii inferioris and risorius muscles

Question 7

Extrinsic tongue muscles are innervated by the _____ cranial nerve.

A)fifth
B)seventh
C)ninth
D)twelfth

Question 8

Which of the following muscles raises each labial commissure of the lips to contribute to a patient's smile?

A)Zygomaticus major muscle
B)Buccinator muscle
C)Platysma muscle
D)Epicranius muscle

Question 9

Which of the following intraoral landmarks is one of the origins of the buccinator muscle?

A)Maxillary tuberosity
B)Pterygomandibular raphe
C)Glossopalatine arch
D)Internal oblique ridge

Question 10

Which of the following muscles listed below does NOT serve to elevate the upper lip?

A)Levator anguli oris muscle
B)Levator labii superioris alaeque nasi muscle
C)Risorius muscle
D)Zygomaticus major muscle

Question 11

Which of the following muscles originates on the inferior border of the mandible and inserts at each of the labial commissures?

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

Question 12

Which of the following muscles inserts onto the coronoid process?

A)Lateral pterygoid muscle
B)Masseter muscle
C)Medial pterygoid muscle
D)Temporalis muscle

Question 13

Into which of the following categories of head and neck muscles is the omohyoid muscle placed?

A)Intrinsic tongue muscle
B)Extrinsic tongue muscle
C)Suprahyoid muscle
D)Infrahyoid muscle

Question 14

When a patient swallows,how are the suprahyoid muscles involved?

A)Elevate the hyoid bone
B)Depress the hyoid bone
C)Retract the hyoid bone
D)Depress the mandible

Question 15

Which of the following muscles is NOT considered a suprahyoid muscle?

A)Digastric muscle
B)Mylohyoid muscle
C)Stylohyoid muscle
D)Sternothyroid muscle

Question 16

All three pharyngeal constrictors work to raise the pharynx and larynx during

A)swallowing.
B)gagging.
C)sneezing.
D)chewing.

Question 17

Which of the following muscles divides the neck region into anterior and posterior cervical triangles?

A)Omohyoid muscle
B)Platysma muscle
C)Sternocleidomastoid muscle
D)Trapezius muscle

Question 18

Which of the following muscles when contracted dilates the nostrils?

A)Orbicularis oris muscle
B)Levator labii superioris muscle
C)Levator anguli oris muscle
D)Levator labii superioris alaeque nasi muscle

Question 19

Which of the following muscles works to protrude the tongue on a patient?

A)Hyoglossus muscle
B)Styloglossus muscle
C)Genioglossus muscle
D)Superior longitudinal muscles

Question 20

Which of the following muscles can show enlargement due to repetitive muscle contraction associated with clenching of the teeth in a patient?

A)Buccinator muscle
B)Masseter muscle
C)Temporalis muscle
D)Zygomatic muscle

Question 21

Facial paralysis can be present with a patient,either temporary or permanent,when involving which of the following patient case histories? (Select all that apply. )

A)Trigeminal neuralgia
B)Cerebrovascular accident
C)Parotid salivary gland cancer
D)Peripheral neurectomy

Question 22

During an extraoral examination of a patient,which of the following needs to be considered with the sternocleidomastoid muscle? (Select all that apply. )

A)If one of the muscles contracts,the head and neck bend to the contralateral side.
B)Effective palpation of the muscle occurs when the patient moves the head to the contralateral side.
C)If both muscles contract,the head will flex at the neck and extend at the junction between the neck and skull.
D)If one of the muscles contracts,the face and anterior part of the neck rotate to the ipsilateral side.

Question 23

From the following list of muscles,select which are considered muscles of facial expression.(Select all that apply. )

A)Buccinator
B)Risorius
C)Platysma
D)Temporalis
E)Masseter

Question 24

MATCHING
From the following list of lip-related movements of the orbicularis oris muscle,match those movements with their CORRECT facial action.
a.With pursing lips
b.With pouting and kissing
c.With grimacing
d.With closing lips
With pressing together

Question 25

Which of the following are considered cervical muscles?

A)Masseter and medial pterygoid muscles
B)Medial and lateral pterygoid muscles
C)Sternocleidomastoid and trapezius muscles
D)Buccinator and epicranial muscles

Question 26

MATCHING
From the following list of lip-related movements of the orbicularis oris muscle,match those movements with their CORRECT facial action.
a.With pursing lips
b.With pouting and kissing
c.With grimacing
d.With closing lips
With tightening and thinning

Question 27

From the following list of muscles,select which are considered infrahyoid muscles.(Select all that apply. )

A)Digastric
B)Mylohyoid
C)Stylohyoid
D)Sternothyroid
E)Omohyoid

Question 28

From the following list of muscles,select which muscles create the faucial pillars within the oral cavity.(Select all that apply. )

A)Palatoglossus
B)Tensor veli palatini
C)Palatopharyngeus
D)Levator veli palatini

Question 29

Which of the following muscles when contracted causes a surprised facial expression on a patient?

A)Corrugator supercilii muscle
B)Epicranius muscle
C)Orbicularis oculi muscle
D)Zygomaticus major muscle

Question 30

Which of the following are considerations when dealing with a history of facial paralysis in a dental setting? (Select all that apply. )

A)Inability to form facial expressions on one side of the face may be present.
B)Twitching,spasms,and weakness can be evident.
C)Loss of voluntary muscle action is always permanent.
D)Reduced drooling and the usual taste sensations are evident.

Question 31

From the following list of muscles,select which are considered muscles of mastication.(Select all that apply. )

A)Buccinator
B)Risorius
C)Platysma
D)Temporalis
E)Masseter

Question 32

MATCHING
From the following list of lip-related movements of the orbicularis oris muscle,match those movements with their CORRECT facial action.
a.With pursing lips
b.With pouting and kissing
c.With grimacing
d.With closing lips
With thrusting outward

Question 33

On what structure do BOTH heads of the masseter muscle originate?

A)Zygomatic process of the maxilla
B)Coronoid process
C)Zygomatic process of the frontal bone
D)Zygomatic arch

Question 34

Which of the following muscles when contracted allows for the retraction of the mandible?

A)Masseter muscle
B)Temporalis muscle
C)Lateral pterygoid muscle
D)Medial pterygoid muscle

Question 35

MATCHING
From the following list of lip-related movements of the orbicularis oris muscle,match those movements with their CORRECT facial action.
a.With pursing lips
b.With pouting and kissing
c.With grimacing
d.With closing lips
Rolling inward between the teeth

Question 36

Which of the following are considerations when dealing with a history of cervical muscle pathology in a dental setting? (Select all that apply. )

A)Patients always can be made to sit themselves in an ergonomically correct position in the dental chair.
B)Patients may not be able to raise the chin as requested during treatment.
C)Patients may possibly have related headaches in the anterior skull region.
D)Additional supports and stabilizers such as pillows may make the patient more comfortable.

Question 37

What are the two parts of the epicranial muscle named?

A)Frontal and occipital bellies
B)Superior and inferior bellies
C)Anterior and posterior bellies
D)Superior and inferior heads
E)Superficial and deep heads

Question 38

From the following list of muscles,select which muscles are considered suprahyoid muscles.(Select all that apply. )

A)Digastric
B)Mylohyoid
C)Stylohyoid
D)Sternothyroid
E)Omohyoid