QUESTION 1
Ameloblasts enter their formative stage:
Prior to dentin formation
At the beginning of root formation
When Hertwig's sheath is formed
Prior to the reversal of functional polarity
After the adjacent odontoblasts become differentiated
QUESTION 2
The root of the tongue is derived mainly from the fusion of the:
Tuberculum impar and first branchial arch
First and second branchial arches
First branchial arches
Second branchial arches
Second and third branchial arches
QUESTION 3
The septum of the nose is formed from the:
Mandibular processes
Maxillary processes
Lateral nasal processes
Median nasal processes
Frontonasal process
QUESTION 4
The mesoderm gives rise to which of the following dental components?
Dental lamina
Enamel spindle
Stratum intermedium
Epithelial rests
Outer dental epithelium
QUESTION 5
Embryologically, nerve cells of the autonomic ganglia are derived from the:
Ectoderm
Ectoderm and mesoderm
Mesoderm
Endoderm
Endoderm and mesoderm
QUESTION 6
The dorsal end of Meckel's cartilage becomes ossified to form the:
Malleus, incus and stapes
Mandible
Incus and malleus
Stapes and incus
Styloid process of the temporal bone
QUESTION 7
The first branchial arch gives rise to one of the following muscles:
Stapedius
Stylohyoid
Tensor tympani
Posterior belly of digastric
Buccinator
QUESTION 8
The ventral portion of Meckel's cartilage
Forms the sphenomandibular ligament
Gives rise to the incus and stapes
Forms the stylohyoid ligament
Usually disappears without a trace
Gives rise to the incus and malleus