Lecture 9

Question 1

What are the four parts of the mandible during TMJ development?
• a. Body, ramus, symphysis, alveolar process
• b. Condylar, angular, symphyseal, secondary cartilages
• c. Superficial, proliferative, hypertrophic, erosion zones
• d. Meckel’s cartilage, condylar cartilage,

Answer 1

Body, ramus, symphysis, alveolar process

Question 2

At what stage does the condylar cartilage arise from mesenchymal condensation?
• a. Embryonic stage
• b. Immature stage
• c. Mature stage
• d. Proliferative stage

Answer 2

Embryonic stage

Question 3

When does the condylar cartilage take a conical shape with the base oriented superiorly and posteriorly?
• a. Embryonic stage
• b. Immature stage
• c. Mature stage
• d. Proliferative stage

Answer 3

Immature stage

Question 4

Which area of the articular surface possesses fibers arranged parallel to the articular surface during the immature stage?
• a. Superficial layer
• b. Middle layer
• c. Deep layer
• d. Erosion zone

Answer 4

Superficial layer

Question 5

What marks the mature stage of condylar cartilage development?
• a. Disappearance of hypertrophied chondrocytes
• b. Erosion process with invasion of mesenchymal tissue
• c. Formation of new bone trabeculae
• d. All of the above

Answer 5

Disappearance of hypertrophied chondorocytes

Question 6

In the articular disc, what is the function of the superior bundle in the bilaminar area?
• a. Contains elastic fibers and limits meniscus in anterior displacement
• b. Inserts in the posterior region of the condyle
• c. Composed of two fascicles
• d. Corresponds to the thinnest portion of the disc

Answer 6

Contains elastic fibres and limits meniscus in anterior displacement

Question 7

What happens to blood vessels in the meniscus during intrauterine life?
• a. Increase in number
• b. Decrease in number
• c. No change
• d. Blood vessels do not exist in the meniscus

Answer 7

Decrease in number

Question 8

When does the articular tubercle appear during TMJ development?
• a. Before eruption of temporary teeth
• b. At birth
• c. After eruption of permanent teeth
• d. During embryonic stage

Answer 8

After eruption of the permanent teeth

Question 9

What is the primary feature of the central area of the articular disc?
• a. Thick consistency
• b. Thinner thickness
• c. High repair capacity
• d. Rich in elastic fibers

Answer 9

Thinner thickness

Question 10

What characterizes the TMJ look definitively?
a. After birth
b. After the eruption of temporary teeth
c. After the eruption of permanent teeth
d. At the embryonic stage

Answer 10

After eruption of the permanent teeth