Deck 14: Temporomandibular Joint

Question 1

Which muscle originates on the styloid process of the temporal bone and inserts on the hyoid bone?

A) Geniohyoid
B) Stylohyoid
C) Sternohyoid
D) Omohyoid

Answer 1

B

Question 2

The bony landmark of the mandible that forms the posterior projection that articulates with the temporal bone is called the

A) angle.
B) styloid process.
C) condyle.
D) ramus.

Answer 2

C

Question 3

Protraction is primarily achieved by which of the following muscles?

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

Answer 3

D

Question 4

The TMJ motion named for opening of the mouth is which of the following?

A) Elevation
B) Depression
C) Lateral deviation
D) Retrusion

Question 5

Normal ROM for mouth opening in an adult would be which of the following?

A) One finger between the upper and lower teeth
B) Half a finger between the upper and lower teeth
C) Two to three fingers between the upper and lower teeth
D) Four fingers between the upper and lower teeth

Question 6

Which muscle originates on the lateral pterygoid plate of the sphenoid and tuberosity of the maxilla and inserts on the ramus and angle of the mandible?

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

Question 7

Which cranial nerve is involved if your client has sensory loss to the face?

A) Cranial nerve V
B) Cranial nerve VI
C) Cranial nerve VII
D) A and C

Question 8

Which prime movers of the TMJ are innervated by the facial nerve?

A) Temporalis
B) Masseter
C) Lateral pterygoid
D) None of the above

Question 9

The bony landmark of the temporal bone that serves as the attachment for the masseter muscle is called the

A) zygomatic process.
B) styloid process.
C) postglenoid tubercle.
D) articular fossa.

Question 10

Which muscle originates on the temporal fossa and inserts on the coronoid process and ramus of the mandible?

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

Question 11

Clenching the teeth is an ISOM contraction of which muscle?

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

Question 12

All of the following muscles are prime movers in mandibular elevation EXCEPT the

A) lateral pterygoid.
B) medial pterygoid.
C) temporalis.
D) masseter.