Ch. 11 Joints of the Skull

Question 1

Articulation of the two parietal bones in the median plane of the skull

Answer 1

sagittal suture

Question 2

articulation of the parietal bones with the frontal bone

Answer 2

frontal (coronal) suture

Question 3

articulation of the parietal bones with the occipital bone

Answer 3

lambdoid suture

Question 4

articulation of the parietal and temporal bones

Answer 4

squamous suture

Question 5

Which type of joint is the TMJ?

Answer 5

synovial, combined hinge and plane

Question 6

Bony surfaces of the TMJ

Answer 6

Mandibular fossa of temporal bone

Head (condyloid process) of the mandible

Question 7

The prominent interarticular ligament in the TMJ

Answer 7

articular disc

Question 8

Oval plate of fibrous tissue that sometimes contains patches of fibrocartilage

Answer 8

articular disc

Question 9

circumference of articular disc attaches to the ___

Answer 9

articular capsule

Question 10

Articular disc divides the joint cavity into these two separate compartments

Answer 10

1. superior compartment located between the articular disc and mandibular fossa
2. the inferior compartment is located between the articular disc and the mandible

Question 11

Movements of the mandible at the TMJ

Answer 11

Hinge movements

Planar movements

Question 12

Hinge movements of the TMJ

Answer 12

Depression

Elevation

Question 13

Inferior movement of the mandible (open the mouth)

Answer 13

depression

Question 14

superior movement of the mandible (close the mouth)

Answer 14

elevation

Question 15

Planar movements of the mandible

Answer 15

Protraction
Retraction
Lateral movement

Question 16

Anterior movement of the mandible in a horizontal plane

Answer 16

Protraction

Question 17

Posterior movement of the mandible in a horizontal plane

Answer 17

retraction

Question 18

side to side movement (grinding, chewing)

Answer 18

lateral movement

Question 19

Unossified membranous areas between cranial bones

Answer 19

fontanelles

Question 20

How many fontanelles are in a fetal skull?

Answer 20

6

Question 21

Largest fontanelle located at the junction of the coronal and sagittal sutures.

Answer 21

Anterior Fontanelle

Question 22

Which sutures create the anterior fontanelle?

Answer 22

coronal and sagittal

Question 23

where is the anterior fontanelle in adults?

Answer 23

bregma

Question 24

Triangular fontanelle located at the junction of the lambdoid and sagittal sutures.

Answer 24

Posterior fontanelle

Question 25

Which sutures create the posterior fontanelle?

Answer 25

lambdoid and sagittal

Question 26

Where is the posterior fontanelle in adults?

Answer 26

lambda

Question 27

Anterolateral fontanelle is also called the

Answer 27

sphenoid fontanelle

Question 28

Small irregular fontanelles located at the junction of the frontal, parietal, sphenoid and temporal bones

Answer 28

anterolateral fontanelles

Question 29

which bones join to create the anterolateral fontanelle?

Answer 29

frontal, parietal, sphenoid, temporal

Question 30

posterolateral fontanelles is also called the

Answer 30

mastoid fontanelle

Question 31

small irregular fontanelles located at the junction of the occipital, parietal and temporal bones

Answer 31

posterolateral fontanelles

Question 32

Which bones join to create the posterolateral fontanelle?

Answer 32

occipital, parietal, temporal

Question 33

Anterior fontanelle is useful to a physician in determining:

Answer 33

1. the position of the fetal head in utero
2. development of the skull
3. the extent of pathological intracranial pressure

Question 34

How long does it take for the anterior fontanelle to become bony?

Answer 34

2 years

Question 35

How long does the average fontanelle take to ossify?

Answer 35

a few months

Question 36

which fontanelle is called the “soft spot”

Answer 36

anterior fontanelle.