The buccopharyngeal membrane is formed:
A. When the stomodeum ectoderm contacts the endoderm of the foregut
B. From fifth branchial arch
C. From Tuberculum impar
D. From the primitive gut
The neural tube gives rise to the:
A. Nervous system
B. Primitive endoderm
C. Embryonic disc
D. Neural groove
The primitive endoderm is formed from the:
A. Embryonic disc
C. Amniotic cavity
D. Primitive yolk sac
In the embryo, the upper lip is formed by the fusion of the:
A. Premaxilla with maxillary processes
B. The median nasal process with lateral nasal processes
C. First branchial arch with second branchial arch
D. Median nasal processes with maxillary processes
The nerve supply of the muscles of mastication shows that these muscles are derived from the:
A. Third branchial arch
B. Fourth branchial arch
C. First branchial arch
D. Second branchial arch
The philtrum of the upper lip is formed largely by:
A. Maxillary processes
B. Globular process
C. Lateral nasal processes
D. None of the above
Every branchial arch contains which of the following structures?
A. Branchial artery
B. Branchiomeric nerve
C. Branchial arch cartilage rod
D. All of the above
Globulomaxillary cyst is found between:
A. Central incisors
B. Central incisor and lateral incisor
C. Lateral incisor and canine
D. Canine and premolar
Which drug causes malformations similar to hemifacial microsomia when taken during early pregnancy?
D. Vitamin D
Median rhomboid glossitis is:
A. Caused by persistence of Tuberculum impar.
B. Red and rhomboidal smooth zone of the tongue.
C. Found in mid line in front of the foramen caecum.
D. All of the above.