2. Embryo of Head, Face and Oral Cavity

Question 1

Upper lip formation is from what two processes?

Answer 1

1. ) medial nasal processes

2. ) Maxillary processes of first brachial arches

Question 2

Primary palate forms from?

Answer 2

the merger of the medial nasal process

Question 3

Secondary palate forms?

Answer 3

Hard and soft palates

Question 4

Secondary palate is formed from?

Answer 4

maxillary processes of the first branchial arches

Question 5

A Cleft lip is a defective fusion of the….? (2)

Answer 5

Medial nasal process w/ the maxillary process

Question 6

what is the tx for cleft lip?

Answer 6

rule of 10’s

10 weeks, 10 lbs, 10gm%HM

Question 7

what is the cause of cleft palate?

Answer 7

failure of the palatal shelves to fuse?

Question 8

What cleft cases are more prominent?

Answer 8

CL & CP (45%)

Question 9

What is Pierre Robin sequence?

Answer 9

1. ) CP
2. ) Mandibular micrognathia
3. ) Glossoptosis

Question 10

What are some nonsyndromic things that would cause orofacial clefting?

Answer 10

Alcohol/cigarette
Folic acid deficiency
Corticosteroid use
Anticonvulsant therapy

Question 11

How do you develop lateral facial cleft?

Answer 11

lack of maxillary and mandibular fusion

Question 12

How do obligue facial clefts form?

Answer 12

failure to fuse with lateral nasal processes w/ maxillary process

Question 13

how do you get median cleft of the upper lip?

Answer 13

failure of fusion of medial nasal processes

Question 14

1/250…

Answer 14

Native Americans

Question 15

1/300

Answer 15

Asians

Question 16

1/700

Answer 16

Caucasians

Question 17

1/1500

Answer 17

African American

Question 18

Ways to Identify a submucous palatal cleft

Answer 18

bone notch posterior of hard palate\

kinda blue line

Question 19

What is a paramedian

Answer 19

congenital invaginations of lower lip

Question 20

What is van der Woude syndrome?

Answer 20

paramedian lip pits
autosomal dominate
CL + CP
most common form of syndromic clefting

Question 21

What is Ankyloglossia

Answer 21

lingual Frenum bound to the mandible

Question 22

When does the thyroid bud usually descend?

Answer 22

7 weeks

Question 23

how do you dx for a thyroid issue?

Answer 23

iodine isotops or

technetium-99m

Question 24

What is Crouzon syndrome?

Answer 24

premature closing of cranial sutures

Question 25

what is apert syndrome

Answer 25

FGFR-2 Chromosome 10q6

Fused digits

Question 26

What causes treacher-collins syndrome?

Answer 26

treacle or TCOF1 messed up