Week 12 - Day 1

What is the primary function of the articular disc in the temporomandibular joint (TMJ)?

• To provide blood supply to the joint

• To increase friction between the mandibular condyle and the articular eminence

• To facilitate both rotational and translational movements within the joint

• To aid in the production of synovial fluid within the joint

In the temporomandibular joint (TMJ), which anatomical structure forms the inclined, bony surface that the mandibular condyle glides against during jaw movements?

• Articular disc

• Temporal bone

• Styloid process

• Articular eminence of the mandible

During mandibular protrusion movements in the temporomandibular joint (TMJ), what type of arthrokinematic motion primarily occurs?

• Medial rotation of the mandibular condyle

• Lateral rotation of the mandibular condyle

• Anterior (forward) translation of the mandibular condyle

• Posterior (backward) translation of the mandibular condyle

During the process of mouth opening within the TMJ oint (TMJ), which sequential kinematic pattern best describes the initial movement followed by a secondary movement of the articular disc?

• Translation, then rotation

• Rotation, then translation

• Lateral deviation, then elevation

• Protrusion ,then retraction

During the process of closing the mouth within the TMJ joint, which sequential kinematic pattern best describes the initial movement followed by a secondary movement of the articular disc?

• Rotation, then translation

• Translation, then rotation

• Elevation, then lateral deviation

• Protrusion, then retraction

Which ligament(s) help(s) suspend the mandible from the cranium? Select all that apply

• Fibrous capsule

• Lateral (temporomandibular) ligament

• Stylomandibular ligament

• Shenomandibular ligament

During lateral excursion to the LEFT, on which side does condylar glide predominantly occur in the temporomandibular joint (TMJ)?

When air pressure inside the lungs is less than air pressure in the atmosphere...

• Air moves into the lungs

• Air moves out of the lungs

A contraction of the diaphragm during inhalation causes it to flatten. What else does the contraction result in?

• Increase in alveolar pressure

• An increase in the volume of the thoracic cavity

• A decrease in lung volume

• A decrease in the volume of the thoracic cavity

Inspiration is produced by a _____________ in the pressure in the thoracic cavity and in the air passages of the lungs.

• decrease

• increase

• consistency