Genetic Syndromes

Question 1

Merging

Answer 1

continuous embryological growth- tongue

Question 2

Fusion

Answer 2

Two separate pieces welding together, skull sutures and hard palate

Question 3

When do branchial arches form?

Answer 3

27-28 days post fertilization

Question 4

How many pairs of arches do human embryos have?

Answer 4

5 pairs 
Mandibular
Hyoid
Thyrohyoid
2 unnamed

Question 5

When do palatal shelves start moving together?

Answer 5

6 weeks

Question 6

Clefting happens most commonly on which side

Answer 6

Left side

Can also be right or bilateral

Question 7

Sub-mucosal cleft

Answer 7

Levator veli palatine does not meet at midline, can’t close VP port
Tensor veli palatine opens Eustachian Tubes, clefting indicates increased ear infection

Question 8

Pre-maxilla

Answer 8

Front 4 teeth, nasal spine and globular process

Question 9

Sub-mucosal cleft signs

Answer 9

Tenting

Bifid Uvula

Question 10

Tenting

Answer 10

velar sling appears tented (usually rounded), tissue can appear bluish due to light from nasal cavity in point of tent (zona pelucida)

Question 11

Biggest symptom of Sub-mucosal cleft

Answer 11

is a baby who does not do ‘bababa’ and jumps to nasals occasionally nasal regurgitation

Question 12

Bifid Uvula

Answer 12

musculis uvuli) symptom of sub-mucosal cleft

Question 13

Rule of 10s for lip surgery

Answer 13

10 weeks
10 pounds
10 g hemoglobin