Development of the Face and Palate Flashcards Preview

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Flashcards in Development of the Face and Palate Deck (17)
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1

When does development of the face take place

4-8 weeks in utero

2

When does development of the palate take place

Approx. 6-10 weeks

3

When is the earliest bone laid down in the skull and where

Around 6/7 weeks in the mandible

4

What does the first pharyngeal arch give rise to

Trigeminal nerve
Muscles of mastication
Malleus
Incus
Meckel’s cartilage

5

What does the second pharyngeal arch give rise to

Facial nerve
Muscles of facial expression
Hyoid bone

6

What does the third pharyngeal arch give rise to

Glossopharyngeal nerve
Stylopharyngeus
Common carotid artery
Hyoid bone

7

What do the fourth and sixth pharyngeal arches give rise to

Vagus nerve
Muscles of pharynx
Larynx
Aortic arch
Laryngeal cartilages

8

What are the 5 prominences of the face

Frontonasal
Paired maxillary
Paired mandibular
Medial nasal
Lateral nasal

9

What does the frontonasal prominence give rise to

Forehead
Bridge of nose

10

What does the medial nasal prominence give rise to

Midline of nose
Philtrum of upper lip

11

What does the lateral nasal prominence give rise to

Alae of nose

12

What does the maxillary prominence give rise to

Cheeks
Lateral upper jaw

13

What does the mandibular prominence give rise to

Lower lip
Jaw

14

How is the primary palate formed

Medial nasal processes form intermaxillary process
This gives rise to the philtrum of the lip and the primary palate

15

How is the secondary palate formed

Maxillary prominences give rise to lateral palatal shelves (secondary palate)

16

How many births does cleft lip and palate affect

1 in 700

17

What causes cleft lip and palate

Failure of fusion of the maxillary prominence with the medial nasal processes