tmj histology

The muscle of mastication that attaches to the neck of the condyle and to the capsule of the TMJ is :

• Medial Pterygoid

• Temporalis

• Masseter

• Lateral pterygoid

The intra-articular disk is confluent posteriorly with retro-discal tissues that have the following features:

• Avascular

• Trauma causes inflammation

• Aneural

• not elastic

Crimping of collagen fibers in the articular disk provides :

• Instability

• Rigidness

• Allows elongation of fibres before tensile stresses

• Reduced surface area

The two movements of the temporomandibular joint (TMJ) are:

• Anterior and posterior

• medial and lateral

• Gliding and hinge

• Superior and inferior

The synovial cavities are divided by the articular disc. The lower joint cavity is involved in rotation or hinge type movement while

The superior joint cavity is involved in :

• Translation

• rotational movements

• hinge movement

• articular movement

The primary type of cartilage found in the temporomandibular joint (TMJ) is:

• Elastic cartilage

• Hyaline cartilage

• Fibrocartilage

• Bone

Which of the following structures is responsible for the lubrication of the TMJ?

• Articular cartilage

• Synovial fluid

• Capsule

• Meniscus

The histological feature that distinguishes the articular disc of the TMJ from other types of cartilage is:

• Presence of a distinct perichondrium

• High collagen fiber density

• Variability in cell types

• Presence of blood vessels

Which ligament is primarily responsible for stabilizing the temporomandibular joint (TMJ)?

• Stylomandibular ligament

• Masseteric ligament

• Sphenomandibular ligament

• Temporomandibular ligament

The primary nerve responsible for the sensory innervation of the TMJ is:

• Glossopharyngeal nerve

• Vagus nerve

• Trigeminal nerve

• Facial nerve