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Flashcards in Head and Neck Deck (25):
1

2nd pharyngeal arch innervated by

CN VII

2

3rd pharyngeal arch innervated by

CN IX

3

4th pharyngeal arch innervated by

CN X

4

6th pharyngeal arch innervated by

CN X

5

1st pharyngeal arch muscles

Mastication

6

2nd pharyngeal arch muscles

Facial expression

7

1st cleft becomes

External auditory meatus

8

1st pouch becomes

Tubulotympanic recess

9

2nd pouch becomes

Palantine tonsils

10

3rd pouch becomes

Inferior parathyroid
Thymus

11

4 pouch becomes

Superior parathyroid
Ultimobranchial bodies

12

Function of parathyroid

Regulate calcium homeostasis

13

Function of thymus

Site of maturation of T lymphocytes

14

Function of ultimobranchial body

Gives rise to C cells

15

Cleft lip more common in

Boys

16

Cleft palate more common in

Girls

17

Cause of cleft lip

Medial nasal processes fail to fuse with the maxillary processes
Often accompanied by failure of the primary and secondary palate to fuse

18

Cause of cleft palate

Palatine shelves fail to fuse with each other

19

Cause of median cleft palate

Two medial nasal processes fail to merge properly

20

Microstomia

Small mouth

21

Microopthalamia

Small eyes

22

Microtia

Small ears

23

Anotia

No ears

24

Ankyloglossa

Tongue tie
Frenulum holds tongue down too tightly

25

1st pharygeal arch innervated by

CN V