Lower Face Development

Question 1

after formation of the stomodeum but still during the fourth week, two bulges of tissue appear _____ to the primitive mouth (stomodeum).

Answer 1

appear inferior

Question 2

what are the two bulges of tissue?

Answer 2

the two mandibular processes

Question 3

what do the two mandibular processes migrate to?

Answer 3

migrate to the facial region

Question 4

these paired mandibular processes then fuse at the midline to form what?

Answer 4

to form the mandibular arch

Question 5

after fusion, the mandibular arch then extends as a band of tissue found inferior to the stomodeum and b/w the developing brain and _____?

Answer 5

separates stomodeum from developing heart

Question 6

the mandibular arch gives rise to?

Answer 6

1. lower face
2. mandible (including teeth)
3. structures association w/mandible
4. tongue

Question 7

lower face timeline

Answer 7

4th week –proliferation (embryonic period)
5-6th week–differentiation (embryonic period)
10th week–morphogenesis (fetal period)