development of face and palate

Question 1

when does the development of the face and palate begin in utero

Answer 1

face - 4-8 wks

palate - 6-10 wks

Question 2

pharyngeal arches

Answer 2

5 ridges/ outgrowths of tissue that give rise to the structures of the head and neck

Question 3

1st pharyngeal arch - derived structures

Answer 3

trigeminal nerve
muscles of mastication
meckels cartilage

Question 4

meckels cartilage

Answer 4

gives rise to the mandible

Question 5

what are the 5 prominences that the face develops from

Answer 5

frontonasal
paired maxillary
paired mandibular
these processes surround the stomadeum

Question 6

what is formed where the mandibular and maxillary processes fuse

Answer 6

lip commisures

Question 7

what is formed from the frontonasal prominence

Answer 7

forehead , bridge of nose

Question 8

what is formed from the medial nasal prominence (thickening of frontonasal)

Answer 8

the intermaxillary process which gives rise to the philtrum and primary palate

Question 9

what is formed from the lateral nasal prominence (thickening of frontonasal)

Answer 9

ala of nose

Question 10

what is formed from the maxillary prominence

Answer 10

cheeks , upper lip, palatal shelves

Question 11

what is formed from the mandibular prominence

Answer 11

lower lip , jaw

Question 12

primary palate

Answer 12

contains 4 anterior teeth ,

medial nasal prominences give rise to the inter maxillary process which is where the primary palate is derived rom

Question 13

secondary palate

Answer 13

formed when the palatal shelves fuse

palatal shelves are derived from the maxillary prominences

Question 14

in what region do the secondary and primary palates fuse

Answer 14

in the region of the incisive foreamen

Question 15

cause of cleft lip

Answer 15

failure of maxillary and medial nasal prominences to fuse

Question 16

cause of cleft palate

Answer 16

failure of palatal shelves to fuse at the midline