Craniofacial Development

Question 1

What does the frontonasal prominence form?

Answer 1

forehead, bridge of nose, medial and lateral nasal prominences

Question 2

What does the maxillary prominence form?

Answer 2

cheeks, latearl portion of upper lip

Question 3

What does the medial nasal prominence form?

Answer 3

philtrum of upper lip, crest, and tip of nose

Question 4

What does the lateral nasal prominence form?

Answer 4

alae of nose

Question 5

What does the mandibular prominence form?

Answer 5

lower lip

Question 6

What happens at 5-12 weeks?

Answer 6

palatogenesis (palate formation)

Question 7

What happens at week 5?

Answer 7

cheilogenesis (nose formation)

Question 8

What are the symptoms of pierre robin sequence?

Answer 8

micro/retrognathia, glossoptosis, and airway obstruction

Question 9

What are the symptoms of treacher-collins syndrome?

Answer 9

• Mandibulo-facial dysostosis
• Underdevelopment of structures associated with Arch 1.
• Downward-slanting eyes, small mandible & malformed/absent ears
• Autosomal dominant, gene on Ch. 5