Palate development

Question 1

when does the palate form?

Answer 1

weeks 6-12

Question 2

where is the primary palate derived from?

Answer 2

fused medial nasal prominences

intermaxillary segment

Question 3

what pushes together the medial nasal prominences?

Answer 3

maxillary prominences

Question 4

contents of the primary palate?

Answer 4

premaxillary segment of maxilla
- 4 incisors
- incisive canal

Question 5

describe intramembranous ossification

Answer 5

mesenchymal cells become osteoblasts
osteoblasts deposit osteoid
mineral deposited
osteoblasts trapped become osteocytes
osteocytes form bone

Question 6

when does secondary palate begin to form?

Answer 6

week 8

Question 7

what are the palatine shelves formed via?

Answer 7

outgrowths of maxillary prominences

Question 8

stages of secondary palate formation?

Answer 8

shelves project on either side of tongue
mandible grows
tongue grows down
shelves grow towards midline
shelves fuse = 2nd palate

Question 9

contents of secondary palate?

Answer 9

palatine segment of maxilla and palatine bone

Question 10

knocking out of what gene results in cleft palate?

Answer 10

TGFB3