Dentistry Quiz

What is the function of the lateral (temporomandibular) ligament in the TMJ?

• Limit medial displacement

• Limit posterior displacement

• Limit lateral displacement

• Limit superior displacement

Which type of joint allows gliding movement?

• Fibrous joint

• Cartilaginous joint

• Synarthrosis joint

• Synovial joint

What is the composition of the mandibular condyle?

• Compact bone only

• Spongy bone covered by thin layer of compact bone

• Spongy bone only

• Compact bone covered by thin layer of spongy bone

Which ligament is the remnant of the dorsal part of Meckel’s cartilage?

• Stylomandibular ligament

• Accessory ligament

• Lateral (temporomandibular) ligament

• Sphenomandibular ligament

What is the function of the synovial fluid in the TMJ?

• Nutrition of avascular tissues

• Increase viscosity of synovial fluid

• Lubricate articular surfaces

• All of the above

Which part of the TMJ capsule is fairly lax?

• Attached to the condyle

• Above the disc

• Below the disc

• Attached to the glenoid fossa

What is the composition of the articular disc in the TMJ?

• Elastic fibers only

• Dense fibrous tissue

• Loose connective tissue

• Adipose tissue

Which ligament originates from the styloid process?

• Accessory ligament

• Lateral (temporomandibular) ligament

• Sphenomandibular ligament

• Stylomandibular ligament

What is the function of the posterior upper lamella of the articular disc?

• Counter the forward pull of the lateral pterygoid muscle

• Stabilize the condyle

• Increase joint flexibility

• Secrete synovial fluid

Which part of the TMJ is composed of spongy bone covered by thin layer of compact bone?

• Mandibular condyle

• Articular eminence

• Glenoid fossa

• Articular disc