Face Development

Question 1

Pharyngeal Clefts are covered by

Answer 1

Ectoderm

Question 2

Pharyngeal Pouches are covered by

Answer 2

Endoderm

Question 3

Incus and Malleus of the middle ear are formed by

Answer 3

1st Pharyngeal Arch

Question 4

Cartilage from this arch form the maxillary, mandibular bones and zygomatic bones

Answer 4

1st Pharyngeal Arch

Question 5

Yields the muscles of mastication, tensor tympani, tensor veli platini, anterior belly of digastric, and mylohyoid

Answer 5

1st pharyngeal arch

Question 6

Gives rise to Trigeminal Nerve

Answer 6

1st Pharyngeal Arch

Question 7

Gives rise to maxillary artery

Answer 7

1st Aortic Arch

Question 8

Gives rise to the stapes

Answer 8

2nd Pharyngeal Arch

Question 9

Gives rise to the styloid process

Answer 9

2nd Pharyngeal Arch

Question 10

Yields posterior belly of the digastric

Answer 10

2nd Pharyngeal Arch

Question 11

Forms the Facial Nerve

Answer 11

2nd Pharyngeal Arch

Question 12

These two arches make up the hyoid bone

Answer 12

2nd and 3rd pharyngeal arch

Question 13

Stylopharyngeus comes from this arch

Answer 13

3rd Pharyngeal Arch

Question 14

Yields the common carotid and base of internal carotid

Answer 14

3rd Aortic Arch

Question 15

Pharyngeal Constrictors are from

Answer 15

4th Pharyngeal Arch

Question 16

Circothyroid, levator veli platini from

Answer 16

4th Pharyngeal Arch

Question 17

Intrinsic muscles of the larynx and striated muscles of the esophagus

Answer 17

6th Pharyngeal Arch

Question 18

What forms from the 5th Pharyngeal Arch

Answer 18

NOTHING

Question 19

This nerve is derived from the IV and VI pharyngeal arch

Answer 19

Vagus (X)

Question 20

Primary nerve of the 4th Pharyngeal Arch

Answer 20

Superior Laryngeal N.

Question 21

Yields the right subclavian and the arch of the aorta

Answer 21

4th Aortic Arch

Question 22

First Pharyngeal cleft yeilds

Answer 22

external acoustic meatus and external layer of the tympanic membrane

Question 23

What happens to the 2nd, 3rd and 4th clefts?

Answer 23

They get overpowered by the 2nd pharyngeal arch and disappear

Question 24

1st Pharyngeal Pouch becomes

Answer 24

Tubotympanic recess

giveing rise to the tympanic cavity

Question 25

2nd Pharyngeal Pouch Becomes

Answer 25

palatine tonsils

Question 26

3rd Pharyngeal Pouch becomes

Answer 26

thymus originates and the inferior region of the parathyroid gland

Question 27

4th Pharyngeal Pouch Forms

Answer 27

superior parathyroid and ultimobranchial body

Question 28

Thyroid Gland is formed by

Answer 28

the 1st and 2nd Pouches

Question 29

Development of the tongue

Answer 29

Forms from pharyngeal arches 1, 3, 4

Question 30

Start and end of facial development

Answer 30

begins around 4th week and is done around the 10th week

Question 31

5 Swellings of the face

Answer 31

Frontonasal prominence
2 Maxillary Prominences
2 Mandibular Prominences

Question 32

Intermaxillary Process is formed by

Answer 32

Inferior tips of the medial nasal process (7th week)

Medial nasal process is the middle part of the forming nose

Question 33

The nose is formed from….

Answer 33

All 5 eminences coming together

Question 34

Unilateral cleft lip

Answer 34

Failure of one maxillary prominence to fuse with the medial nasal prominence of the same side

Question 35

Bilateral cleft lip

Answer 35

Failure of both maxillary prominence to fuse with the medial nasal prominence

Question 36

Difference between anterior and posterior cleft palate

Answer 36

anterior occurs before the incisive foramen

posterior occurs after the incisive foramen

Question 37

Anterior cleft palate

Answer 37

palatine shelves fail to fuse with the intermaxillary segment (primary palate)

Question 38

Posterior Cleft palate

Answer 38

palatine shelves fail to fuse with each other medially and with the nasal septum.