Head: Skull Imaging

Question 1

Paranasal sinuses

Answer 1

• Air filled cavities

- Extensions of respiratory tract

Question 2

Paranasal sinuses function

Answer 2

• Heat, humidify air

- Sound resonance

Question 3

Paranasal sinuses locations

Answer 3

• Frontal
• Ethmoid
• Sphenoid
• Maxillary

Question 4

Temporomandibular joint consists of

Answer 4

• Mandibular condyle
• Mandibular fossa
• Articular disc

Question 5

Temporomandibular joint

Answer 5

• Modified synovial hinge joint (allows for more than just flex/ext)
• Divided into two cavities

Question 6

Upper Temporomandibular joint function

Answer 6

• Translation of disc

Question 7

Lower Temporomandibular joint function

Answer 7

• Rotation of mandibular condyle

Question 8

Temporomandibular joint innervation

Answer 8

• Innervated by V3

Question 9

Temporomandibular joint muscles

Answer 9

• Lateral pterygoid muscle attaches to anterior disc/mandible neck

Question 10

Ligaments of the Temporomandibular joint

Answer 10

• Joint capsule
• Lateral ligament
• Stylomandibular ligament
• Sphenomandibular ligamen

Question 11

Temporomandibular Joint Dysfunction (TJD)

Answer 11

• Blanket term for conditions that cause pain, dysfunction, of the TMJ and/or muscles of mastication
• Myofascial
• Articular disc
• Arthritis

Question 12

Symptoms of Temporomandibular Joint Dysfunction (TJD)

Answer 12

• Pain, pain with jaw movement
• Stiffness/reduced range of motion
• Jaw locking
• Altered teeth alignment
• Headaches, dizziness, tinnitus
• Bruxism

Question 13

Dislocation of the TMJ

Answer 13

• Anterior is most common
• Posterior dislocation uncommon because of bone/ligament support
• Lateral ligament
• Postglenoid tubercle
• Trauma related - mandibular fracture could be present

Question 14

Occipito-Mental view is also called

Answer 14

• Waters view

Question 15

Elevation of mandible (mouth closing) muscles

Answer 15

• Temporalis
• Masseter
• Medial pterygoid

Question 16

Depression of mandible (mouth opening) muscles

Answer 16

• Lateral pterygoid
• Suprahyoid
• Infrahyoid muscles

Question 17

Protrusion of mandible (protruding chin) muscles

Answer 17

• Lateral pterygoid
• Masseter
• Medial pterygoid

Question 18

Retrusion of mandible (retruding chin) muscles

Answer 18

• Temporalis (posterior oblique and near horizontal fibers)

- Masseter

Question 19

Lateral movement of mandible (grinding and chewing) muscles

Answer 19

• Temporalis of same side
• Pterygoids of opposite side
• Masseter