Dental Medicine Quiz

What are the components of the Temporomandibular Joint (TMJ)?

• Fibrous capsule and TMJ ligaments

• Articular eminence and Joint cavity

• Articular disc and Capsular ligament

• Condyle and Glenoid fossa

Answer explanation

The components of the Temporomandibular Joint (TMJ) are the Condyle and Glenoid fossa.

Which type of joint is the Temporomandibular Joint (TMJ)?

• Fibrous joint

• Suture joint

• Cartilaginous joint

• Synovial joint

Answer explanation

The Temporomandibular Joint (TMJ) is a Synovial joint, allowing for movement in multiple directions due to its structure and composition.

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

• Produces red blood cells

• Stores excess nutrients

• Provides structural support

• Lubricates the joint surfaces

Answer explanation

The function of the synovial membrane in the TMJ is to lubricate the joint surfaces.

Which nerve provides sensory innervation to the TMJ?

• Vagus nerve

• Glossopharyngeal nerve

• Facial nerve

• Auriculotemporal nerve

Answer explanation

The auriculotemporal nerve provides sensory innervation to the TMJ, making it the correct choice among the options given.

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

• Adipose tissue

• Hyaline cartilage

• Elastic cartilage

• Dense fibrous connective tissue

Answer explanation

The composition of the articular disc in the TMJ is dense fibrous connective tissue.

Which ligament is considered the main intrinsic ligament of the TMJ?

• Temporomandibular ligament

• Collateral ligaments

• Sphenomandibular ligament

• Stylomandibular ligament

Answer explanation

The main intrinsic ligament of the TMJ is the Temporomandibular ligament.

What is the role of the fibrous capsule in the TMJ?

• Enhances joint stability

• Provides blood supply

• Stores synovial fluid

• Regulates temperature

Answer explanation

The fibrous capsule in the TMJ enhances joint stability by providing structural support and maintaining the position of the joint components.

Which artery supplies blood to the TMJ?

• Facial artery

• Superior thyroid artery

• External carotid artery

• Internal maxillary artery

Answer explanation

The correct artery that supplies blood to the TMJ is the Internal maxillary artery.

What is the histological composition of the condyle in the TMJ?

• Elastic cartilage

• Hyaline cartilage

• Fibrous connective tissue

• Fibrocartilage covering

Answer explanation

The histological composition of the condyle in the TMJ is fibrocartilage covering, not elastic cartilage, hyaline cartilage, or fibrous connective tissue.

Which movement of the TMJ involves hinge rotatory action?

• Condyle and articular disc

• Disc and articular eminence

• Capsule and articular fossa

• Condyle and articular eminence

Answer explanation

The movement of the TMJ involving hinge rotatory action is between the condyle and articular eminence.