Deck 19: Temporomandibular Joint

Question 1

The articular eminence of the temporomandibular joint is a smooth,rounded protuberance on the inferior aspect of the zygomatic process and is positioned _____ to the articular fossa.

A) anterior
B) posterior
C) medial
D) lateral

Answer 1

anterior

Question 2

With a temporomandibular disorder,the pain present originates from which surrounding structure(s)?

A) Joint disc central region
B) Soft tissue such as muscles
C) Hyaline cartilage
D) Skull bones such at temporal bone and mandible

Answer 2

Soft tissue such as muscles

Question 3

Which of the following is a correct statement concerning the histology present in the temporal bone in the area of the temporomandibular joint?

A) Cancellous bone overlying compact bone
B) Outermost surface covered by endosteum
C) Innermost part consists of periosteum and medullary cavity
D) Surface covered by fibrocartilage

Answer 3

Surface covered by fibrocartilage

Question 4

The growth center of the temporomandibular joint consists of _____underneath the periosteum on the articulating surface of the mandibular condyle.

A) elastic cartilage
B) cancellous bone
C) hyaline cartilage
D) compact bone

Question 5

To which poles of the mandibular condyle is the joint disc attached to within the temporomandibular joint?

A) Lateral and medial
B) Anterior and posterior
C) Lateral and anterior
D) Posterior and medial

Question 6

Which of the following bones of the head are involved in the articulation of the temporomandibular joint?

A) Maxilla and mandible
B) Temporal bone and mandible
C) Temporal bone and frontal bone
D) Frontal bone and maxilla

Question 7

Which of the following is a depression on the inferior aspect of the temporal bone that is part of the temporomandibular joint?

A) Postglenoid process
B) Articular eminence
C) Articular fossa
D) Articulating surface

Question 8

During what weeks of prenatal development does the temporomandibular joint develop?

A) Fifth to sixth week
B) Sixth to eighth week
C) Tenth to eleventh week
D) Eleventh to twelfth week

Question 9

The muscles that are palpated as part of a complete temporomandibular joint examination include the masseter,temporalis,medial pterygoid,lateral pterygoid,and:

A) hyoid muscles.
B) sternocleidomastoid muscle.
C) frontalis.
D) orbicularis oris.

Question 10

Which part of the joint disc of the temporomandibular joint has both blood vessels and nerves?

A) Central region
B) Peripheral region
C) Outer edge
D) Entire disc has both

Question 11

Where is the temporomandibular joint palpated upon examination of the structure?

A) Just anterior to each ear
B) At the angles to each mandible
C) Superior to each zygomatic arch
D) Directly inferior to each orbit

Question 12

Which of the following does not come in numbers of two on a person as it relates to the temporomandibular joint?

A) Number of joint discs in one joint
B) Number of bones involved in the one joint
C) Number of synovial cavities in each joint disc
D) Number of attachments of the poles of the joint to each condyle

Question 13

Which of the following is the inner layer of the joint capsule,which consists of a thin connective tissue that contains nerves and blood vessels?

A) Periosteum
B) Articulating surface
C) Synovial membrane
D) Joint disc

Question 14

Which of the following would not be considered a symptom or a sign of a temporomandibular disorder?

A) Limited mandibular opening
B) Chronic joint tenderness
C) Fever and sweating
D) Swelling and muscle spasms

Question 15

All signs and symptoms related to the temporomandibular disorder should also be noted in the patient record,as should any parafunctional habits and:

A) related systemic diseases.
B) biopsy of the joint tissue.
C) laboratory blood workups.
D) scan of the brain.

Question 16

Which of the following is a thick substance that fills the temporomandibular joint,lubricates it,and provides nutrition to parts of the joint disc?

A) Immunoglobulins
B) Plasma
C) Blood
D) Synovial fluid

Question 17

Which of the following is not the usual movement of the temporomandibular joint involving the mandible and allowed by the gliding and rotation of the joint?

A) Retraction
B) Protrusion
C) Depression
D) Subluxation

Question 18

What directly provides the nutritional needs for the central region of the joint disc of the temporomandibular joint?

A) Lymphatic vessels
B) Synovial fluid
C) Gingival crevicular fluid
D) Plasma

Question 19

On cross section,each joint disc of the temporomandibular joint appears caplike on the mandibular condyle,with its superior aspect _____ from anterior to posterior and its inferior aspect concave.

A) concave
B) convex
C) flat
D) concavoconvex

Question 20

Which of the following completely encloses the temporomandibular joint?

A) Postglenoid process
B) Joint capsule
C) Periosteum
D) Growth center