Skull Development

Question 1

Neurocranium contains

Answer 1

vault bones

cranial base bones (basicranium)

Question 2

Viscerocranium consists of

Answer 2

…

Question 3

Skull bones and cartilage are derived from the interaction of

Answer 3

outer epithelial layers, local mesodermal somites, neural crest cells migrating in from the neural tube area

Question 4

Vault bones form by

Answer 4

Membranous ossification

Question 5

Parts of bone that fuse by membranous ossification

Answer 5

interparietal part of occiput, parietal, frontal, squamous temporal

Question 6

Cranial base formed by

Answer 6

Endochondral ossification

Question 7

Endochondral ossification forms these bones

Answer 7

ethmoid, sphenoid, petrous temporal, occipital

Question 8

Synchondrosis joins these bones

Answer 8

Frontal, ethmoid, sphenoid, occipital

Question 9

The spheno-ethmoidal and spheno-occipital joints close during this phase of development

Answer 9

Mid-teens

Question 10

Palatine prcoesses of maxila fuse with septum to separate these two cavities

Answer 10

Oral and nasal

Question 11

Failure of closure of cleft palate is due to failure of fusions of _________

Answer 11

Palatine process

Question 12

Fetal alcohol syndrome occure from incorrect closure of these prominences

Answer 12

Maxillary and nasal

-smooth philtrum, thin upper lip, eyes wide apart