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Oral Anatomy > Bones, Muscles, Nerves, Arteries, TMJ > Flashcards

Bones, Muscles, Nerves, Arteries, TMJ Flashcards

1
Q

What two structures articulate with the disc in the TMJ?

a. Coronoid process of mandible and mandibular fossa of temporal bone
b. Condyloid process of mandible and mandibular fossa of temporal bone
c. Coronoid process of mandible and mandibular fossa of sphenoid bone
d. Condyloid process of mandible and mandibular fossa of sphenoid bone
e. Condyloid process of mandible and mandibular fossa of maxilla

A

b. condyloid process of mandible and mandibular fossa of temporal bone

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2
Q

The ligament that limits the amount of movement of the mandible and attaches from the inferior surface of the neurocranium to the lingual of the mandible is the?

a. Lateral (TMJ) ligament
b. Stylomandibular ligament
c. Sphenomandibular ligament
d. Sternocleidomastoid ligament

A

c. sphenomandibular ligament

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3
Q

Where on the temporal bone does the mandible function?

a. In the anterior three quarters of the mandibular fossa called the articular fossa
b. In the posterior quarter of the mandibular fossa called the articular fossa
c. On the posterior interior portion of the articular eminence
d. On the anterior inferior portion of the articular eminence

A

c. on the posterior interior portion of the articular eminence

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4
Q

Which muscle has its origin in the pterygoid fossa?

a. Medial pterygoid fossa
b. Lateral pterygoid fossa
c. Masseter
d. Temporalis muscle

A

a. medial pterygoid fossa

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5
Q

The masseter muscles elevates the mandible. Which other muscles are involved in elevating the mandible?

a. Temporalis (anterior fibers) and lateral ptergyoid muscles.
b. Lateral pterygoid muscles and medial pterygoid muscles.
c. Temporalis (posterior and anterior fibers) and medial pterygoid muscles.
d. Medial ptergyoid muscles and temporalis (anterior fibers).
e. Lateral pterygoid muscles and temporalis (posterior fibers).

A

d. medial pterygoid muscles and temporalis (anterior fibers)

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6
Q

In which direction do the fibers of the lateral pterygoid muscles travel from their origin to their insertion?

a. Medial and posterior
b. Medial and anterior
c. Lateral and anterior
d. Lateral and posterior

A

d. lateral and posterior

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7
Q

Which of the following muscles of facial expression does not contribute to moving the lips?

a. orbicularis oris
b. risorius
c. levator labii superioris
d. depressor labii inferioris
e. orbicularius oculi

A

e. orbicularis oculi

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8
Q

Which of the following would you palpate anterior and 1 to 2 inches superior to the ear?

a. masseter, the origin
b. masseter, the insertion
c. temporalis, posterior fibers
d. temporalis, anterior fibers
e. temporalis, the insertion

A

d. temporalis, anterior fibers

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9
Q

Which muscle, when contracting, moves the mandible to the right?

a. The left medial pterygoid muscle
b. The right medial pterygoid muscle
c. The left temporalis muscle, horizontial fibers
d. The right lateral pterygoid muscle
e. The left lateral pterygoid muscle

A

e. the left lateral pterygoid muscle

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10
Q

The suture line joining the two parietal bones is called the

a. squamosal suture
b. coronoid suture
c. sagittal suture
d. intermaxillary suture
e. lamboid suture

A

c. sagittal suture

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11
Q

Which teeth are most likely to have roots in proximity with the maxillary sinus?

a. maxillary molars and premolars
b. maxillary canines
c. maxillary incisors
d. mandibular posterior teeth

A

a. maxillary molars and premolars

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12
Q

Which structure is not located on the sphenoid bone?

a. foramen ovale
b. foramen rotundum
c. greater wing
d. pterygoid process
e. articular fossa

A

e. articular fossa

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13
Q

What bony process of the maxilla surrounds tooth roots?

a. Nasofrontal process
b. Frontal process
c. Alveolar process
d. Zygomatic process
e. Palatine process

A

c. alveolar process

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14
Q

The nerve branch of the trigeminal that provides pain sensation to the mandibular teeth exits the skull through what foramen?

a. foramen ovale
b. foramen rotundum
c. mandibular foramen
d. mental foramen
e. infraorbital foramen

A

a. foramen ovale

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15
Q

Anesthetizing nerve fibers of what nerve results in numbness in half of the anterior two thirds of the tongue?

a. hypoglossal nerve
b. glossopharyngeal nerve
c. lingual nerve branch of trigeminal nerve
d. lingual nerve branch of facial nerve

A

c. lingual nerve branch of trigeminal nerve

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16
Q
  1. Which two nerves branch off the infraorbital nerve while it is in the infraorbital canal?
    a. MSA and PSA
    b. ASA and MSA
    c. PSA and ASA
    d. MSA and nasopalatine
    e. Nasopalatine and greater palatine
A

b. ASA and MSA

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17
Q

Which of the following nerve branches does not need to be anesthetized in order to block the sensation of pain to the pulp and all surrounding bone and gingiva of tooth No. 27 prior to an extraction?

a. buccal nerve
b. mental nerve
c. incisive nerve
d. inferior alveolar nerve
e. lingual nerve

A

a. buccal nerve

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18
Q

The branches of which nerve cause the masseter muscle fibers to contract, thus squeezing the teeth together?

a. CN V: maxillary division
b. CN V: mandibular division
c. CN V: ophthalmic division
d. facial nerve
e. lingual nerve

A

b. CN V: mandibular division

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19
Q

What space does the maxillary nerve pass through immediately after exiting the foramen rotundum?

a. nasopalatine canal
b. mandibular canal
c. maxillary sinus
d. infraorbital canal
e. pterygopalatine space

A

e. pterygopalatine space

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20
Q

The mental foramen is located where?

a. On the external surface of the mandible
b. On the internal surface of the mandible
c. On the palatal surface of the maxilla
d. On the external surface of the maxillae
e. On the sphenoid bone

A

a. on the external surface of the mandible

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21
Q

Which of the following bones does not form part of the temporal fossa?

a. parietal
b. frontal
c. sphenoid
d. temporal
e. occipital

A

e. occipital

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22
Q

Which node would first show enlargement from an infection of a mandibular incisor?

a. submental
b. submandibular
c. parotid
d. cervical
e. preauricular

A

a

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23
Q

At what location would you palpate the cervical lymph node chain?

a. around the sternocleidomastoid muscle
b. near the symphysis of the mandible
c. over the submandibular gland
d. behind the ear
e. over the parotid gland

A

a

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24
Q

Branches of what artery supply blood to the mandibular teeth?

A

maxillary artery

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25
Q

Branches of what artery supply blood to the maxillary teeth?

A

maxillary artery

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26
Q

Which artery enters the mandible through the mandibular foramen?

a. mental a.
b. mylohyoid a.
c. inferior alveolar a.
d. posterior superior alveolar a.
e. infraorbital a.

A

c

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27
Q

Nerves that provide sensory innervation/supply the hard palate are the:

a. MSA and ASA
b. PSA, MSA, and ASA
c. lingual and palatine
d. nasopalatine and posterior palatine
e. nasopalatine and anterior palatine

A

e

28
Q

Which nerves provide sensory innervation/supply all tooth pulps?

a. superior alveolar and its branches
b. inferior alveolar and its branches
c. fifth cranial nerve and its branches
d. PSA and its branches
e. maxillary n. and its branches

A

c

29
Q

The origin of the medial pterygoid muscle includes which of the following?

a. anterior surface of the neck of the condyle
b. lateral side of the lateral pterygoid plate
c. zygomatic arch
d. coronoid process of mandible
e. pterygoid fossa

A

e

30
Q

The suture line between the temporal and parietal bones is called the:

A

squamosal suture

31
Q

Which major muscle of mastication has fibers that retract the mandible?

A

temporalis m

32
Q

Which bone has the openings/foramina for the branches of the trigeminal nerve to exit the neurocranium?

A

sphenoid bone

33
Q

What nerves are anesthetized when numbing the pulp and surrounding facial and lingual soft tissue of a mandibular first molar extraction?

a. inferior alveolar and mental nerves
b. posterior and middle superior alveolar and buccal (buccinator) nerves
c. inferior alveolar and buccal (buccinator) nerves
d. inferior alveolar, buccal (buccinator) and lingual nerves
e. infraorbital and middle superior alveolar nerves

A

D

34
Q

What is the lymph drainage for an infection found in the pulp of the mandibular central incisor?

a. submandibular to facial to deep cervical nodes
b. submental to parotid to deep cervical nodes
c. parotid to deep cervical to submandibular
d. submental to submandibular to deep cervical nodes
e. submandibular to parotid to deep cervical nodes

A

D

35
Q

Which of the following passes through the foramen rotundum?

a. inferior alveolar nerve
b. opthalmic division of the trigeminal nerve
c. maxillary division of the trigeminal nerve
d. mandibular division of the trigeminal nerve
e. maxillary artery

A

C

36
Q

The muscles of mastication are innervated by which cranial nerve?

a. V (maxillary or second division)
b. V (mandibular or third division)
c. VII
d. IX
e. XII

A

B

37
Q

Which muscles have their origin (in part) on the zygomatic bones?

a. suprahyoid muscles
b. medial pterygoid muscles
c. lateral pterygoid muscles
d. temporalis muscles
e. masseter muscles

A

E

38
Q

Which of the following is NOT a ligament that limits the movement of the mandible?

a. stylomandibular
b. synovial
c. sphenomandibular
d. lateral or temporomandibular
e. capsular

A

B

39
Q

What nerve passes along the nasal septum to enter onto the palate through the incisive foramen?

a. anterior (greater) palatine
b. infraorbital
c. anterior superior alveolar
d. nasopalatine
e. posterior superior alveolar

A

D

40
Q

The TMJ is the articulation of which two bones?

a. mandible and sphenoid
b. sphenoid and temporal
c. temporal and maxillae
d. mandible and temporal
e. zygomatic and mandible

A

D

41
Q

Which nerves must be anesthetized when numbing the pulp and surrounding facial and lingual soft tissue for extraction of a mandibular canine for extraction? (There is one best answer)

a. inferior alveolar (including mental branch)
b. inferior alveolar, lingual and infraorbital nerve
c. inferior alveolar and buccal (buccinator) nerves
d. inferior alveolar, anterior superior alveolar and lingual nerves
e. inferior alveolar (including mental branch) and lingual nerves

A

E

42
Q

Which of the following muscles is most directly involved in the movement of the upper lip?

a. buccinator
b. levator anguli oris
c. nasalis
d. orbicularis oculi
e. mentalis

A

B

43
Q

What is the lymph drainage for an infection found in the chin?

a. submandibular to facial to deep cervical nodes
b. submental to parotid to deep cervical nodes
c. parotid to deep cervical to submandibular
d. submental to submandibular to deep cervical nodes
e. submandibular to parotid to deep cervical nodes

A

D

44
Q

Which of the following ligaments limits the movement of the mandible and stretches between the lingula of the mandible to the spine of the sphenoid?

a. stylomandibular
b. synovial
c. sphenomandibular
d. lateral or temporomandibular
e. capsular

A

C

45
Q

Fibers of which muscles are responsible for protruding the mandible (pulling it forward)?

a. temporalis muscles, anterior fibers
b. masseter muscles
c. medial pterygoid muscles
d. lateral pterygoid muscles
e. temporalis muscles, posterior fibers

A

D

46
Q

The insertion of the masseter muscle is located where?

a. zygomatic arch
b. anterior neck of the condyle
c. pterygoid fossa of the sphenoid bone
d. lateral angle of the mandible
e. medial angle of the mandible

A

D

47
Q

Which nerve passes through the foramen ovale of the sphenoid bone?

a. middle superior alveolar nerve
b. maxillary division of the trigeminal nerve
c. inferior alveolar nerve
d. mandibular division of the trigeminal nerve
e. nasopalatine nerve

A

D

48
Q

Which bone does NOT join with (touch) the maxillae bones?

a. parietal
b. zygomatic
c. frontal
d. palatine
e. occipital
f. nasal

A

A, E

49
Q

Which of the following landmarks is located on a maxilla bone?

a. mental foramen
b. articular eminence
c. infraorbital foramen
d. coronoid process
e. mandibular fossa

A

C

50
Q

Which bone does not form part of the eye orbit

a. ethmoid
b. zygoma
c. maxilla
d. lacrimal
e. occipital

A

E

51
Q

Which artery (and its branches) supplies blood to all of the mandibular teeth (pulps), but not the maxillary teeth?

a. inferior alveolar
b. pterygoid part
c. infraorbital
d. descending palatine
e. masseteric

A

A

52
Q

Which of the following landmarks is the location of the duct draining the submandibular salivary glands?

a. plica sublingualis (sublingual fold)
b. sublingual caruncle
c. lingual frenum
d. vestibular fornix
e. plica fimbriata

A

B

53
Q

Which of the following can be palpated just slightly in front of and below the ear opening (external auditory meatus)?

a. insertion of the masseter muscle
b. origin of the massester muscle
c. insertion of the temporalis muscle
d. origin of the temporalis muscle
e. origin of the lateral pterygoid muscle

A

B

54
Q

Which of the following nerves (or nerve branches) is NOT part of the Maxillary division of the fifth cranial nerve?

a. nasopalatine
b. infraorbital
c. posterior superior alveolar
d. lingual
e. pterygopalatine

A

D

55
Q

Which of the following cranial nerves innervate the muscles that move the tongue?

a. Trigeminal nerve (V): maxillary division
b. Trigeminal nerve (V): mandibular division
c. Facial nerve (VII)
d. Glossopharyngeal (IX)
e. Hypoglossal (XII)

A

E

56
Q

Which of the following statements is true regarding the lateral pterygoid muscles?

a. they are innervated by the motor branches of the facial nerve
b. they have their origin on the zygomatic arch
c. they have their insertion on the medial surface of the mandible’s angle
d. they work together to protrude the mandible during jaw movement
e. their horizontal fibers retrude the mandible

A

D

57
Q

Which of the following cranial nerves innervate the anterior two thirds of the tongue for taste?

a. Trigeminal nerve (V): maxillary division
b. Trigeminal nerve (V): mandibular division
c. Facial nerve (VII)
d. Glossopharyngeal (IX)
e. Hypoglossal (VII)

A

C

58
Q

Which of the following statements is true regarding the medial pterygoid muscles?

a. they are innervated by the sensory branches of the maxillary division of the trigeminal nerve
b. they have their origin on the zygomatic arch
c. they have their insertion on the medial surface of the mandible’s angle
d. they work together to protrude the mandible during jaw movement
e. their horizontal fibers retrude the mandible

A

C

59
Q

Which of the following nerves innervates the pulp of tooth #3?

a. cranial nerve V: mandibular division
b. posterior superior alveolar nerves
c. middle superior alveolar nerves
d. both posterior and middle superior alveolar nerves
e. posterior and middle superior alveolar and greater palatine nerves

A

D

60
Q

Which of the following bones forms at least part of the origin of three pairs of muscles of mastication?

a. Sphenoid bone
b. temporal bones
c. occipital bone
d. parietal bones
e. mandible

A

A

61
Q

Which of the following nerves innervates the pulp of tooth #19?

a. cranial nerve V: mandibular division
b. posterior superior alveolar nerves
c. middle superior alveolar nerves
d. parietal both posterior and middle superior alveolar nerves
e. lingual nerve

A

A

62
Q

Branches of which of the following cranial nerves innervate the anterior two thirds of the tongue for sensation (feeling a needle stick)?

a. trigeminal nerve (V): maxillary division
b. trigeminal nerve (V): mandibular division
c. facial nerve (VII)
d. glossopharyngeal (IX)
e. hypoglossal (VII)

A

B

63
Q

Which of the following can be palpated just above and behind the ears?

a. insertion of the masseter muscle
b. origin of the masseter muscle
c. insertion of the temporalis muscle
d. origin of the temporalis muscle
e. origin of the later pterygoid muscle

A

D

64
Q

The drainage of infection from tooth #19 drains first (most immediately) into which lymph nodes?

a. submental
b. submandibular
c. superficial parotid
d. deep cervical
e. superficial cervical

A

B

65
Q

Which nerve branch of Cranial Nerve 5 innervates the pulp of tooth #24?

a. mental branch
b. incisive branch
c. infraorbital branch
d. nasopalatine branch
e. anterior superior alveolar

A

B

Oral Anatomy (7 decks)

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