EX3; Mandible and TMJ Practical Images

Question 1

What kind of ossification center is this

Answer 1

intramembranous

Question 2

What kind of ossification center is this

Answer 2

endochondral

Question 3

What is this image as a whole of (specifically the PDL)

Answer 3

growth site

Question 4

What are these structures from Meckel’s cartilage

Answer 4

1. incus
2. malleus
3. anterior mallelar ligament
4. sphenomandibular ligament
5. mylohyoid groove ligament
6. enclosed in anterior lingual part of developing mandible

Question 5

What is this an image of

Answer 5

ossification center of a mandible half

Question 6

Answer 6

1. tongue
2. meckel’s cartilage
3. bone
4. lip

Question 7

Answer 7

1. Meckel’s cartilage
2. bone

Question 8

Answer 8

1. epithelial buds
2. Meckel’s cartilage

Question 9

Answer 9

1. bone
2. Meckel’s cartilage

Question 10

The developing mandibular bone is in this region as depicted by the arrows

Answer 10

area of mental foramen

Question 11

What do the red and black arrows represent

Answer 11

red; developing primary second molar bud

black; mylohyoid muscle attached to medial sides of Meckel’s cartilages

Question 12

What is the red arrow pointing to

Answer 12

the attachment of the mylohyoid on the medial Meckel’s cartilage

Question 13

Answer 13

1. malleus
2. incus
3. TMJ articular disc
4. condylar cartilage

Question 14

What kind of joint is this

Answer 14

freely movable (fetal elbow)

note; the single joint cavity, incomplete disc, and cartilage articular surfaces

Question 15

Answer 15

A; soft connective tissue articulating surfaces

B; two joint cavities

C; complete articular disc

Question 16

Answer 16

T; temporal bone

D; disc

C; condyle

P; lateral pterygoid

E; articular eminence

Question 17

What do the arrows represent

Answer 17

red = semilunar ganglion

blue = blastama of TMJ

black = mandibular bone

Question 18

Answer 18

1. temporal bone
2. blastema; TMJ
3. mandible bone
4. Meckel’s cartilage
5. lateral pterygoid
6. semilunar ganglion

Question 19

Answer 19

articular disc

Question 20

Answer 20

1. temporal bone
2. articular disc
3. cavitation of joint
4. articualr surface
5. condylar cartilage
6. lateral pterygoid

Question 21

Answer 21

1. articular disc
2. lower joint caivty
3. articular surface
4. condylar cartilage

Question 22

Which one of the condyles is of an adult older than 25 years, top or bottom?

Answer 22

bottom; note the bone tissue and absence of bone marrow

Question 23

Identify the labels and the age of this TMJ

Answer 23

1. articular dics
2. articular surface
3. compact bone

over 25, due to compact bone replacing cartilage

Question 24

Which of these is from an individual 25 or younger, top or bottom

Answer 24

bottom

note; the hyaline cartilage and bone marrow

Question 25

Which of these is the older/younger

Answer 25

left = young

right = old