Development of Face and Oral Cavity Flashcards Preview

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Flashcards in Development of Face and Oral Cavity Deck (27):
1

Forebrain grows rostrally (toward Oral Cavity) to overhang _____ and ______

Buccopharyngeal Membrane
Primitive Heart

2

______ induce formation of neural plate within ectoderm

Mesoderm cells

3

Neural Crest Cells develop from

Lateral margins of Neural Plate

4

Neural Crest Cells are source of

Ectomesenchyme for Head and Neck (Dentin, Meninges, Pharyngeal Arches)

5

In CT of head NCC develop into

Fibroblasts and Pericytes

6

At end of NCC migration, they attach to neural tube and form sensory ganglia of _________

CN 5 (Trigeminal), 7 (Facial), 9 (Glossopharyngeal) 10 (Vagus)

7

Pharyngeal lining is

Endoderm

8

Epithelium of Stomadeum and Rathke's pouch (adenohypophysis) is

Ectoderm

9

Organs behind Buccopharyngeal membrane are _____ while organs anterior are ______

Endoderm
Ectoderm

10

During 4th week, mesenchymal growth begins for _______

Mandibular, Maxilla, and Nasal Processes

11

1st indication of nasal swelling is the ______ which sinks into mesenchyme forming the ______

Nasal Placode
Nasal Pit

12

During the 5th week lateral and medial nasal swellings ______

Grow to form a Nasal Pit

13

Medial swellings of the nose form:

Middle of Nose
Philtrum
Intermaxillary bone
Entire primary palate

14

Formation of the face arises from

Mandibular and Maxillary Processes
Lateral and Medial Nasal swellings

15

The ______ is formed between lateral nasal swellings and maxillary process

Nasolacrimal Duct

16

Primary Palate formation occurs during ______ and is a result of _______

5-6th week
Fusion of medial nasal and frontonasal processes

17

Three outgrowths appear in oral cavity:

Nasal Septum (downward from frontonasal process)
2 Palatal Shelves

18

After tongue is withdrawn, the palatal shelves _______

Elevate and fuse with each other and the primary palate (will separate the oral from nasal cavity)

19

The Nasal Cavity is formed from fusion of ______ with ______

Palatal shelves
Nasal Septum

20

Cleft Lip is a result of lack of fusion between _____ and ____

Maxillary Prominence
Median Nasal Prominence

21

Anterior Palate Cleft is result of lack of fusion between ______ and ______

Lateral Palatal Shelf
Primary Palate

22

Secondary Palate Cleft is result of lack of fusion between

Lateral Palatal Shelf
Nasal Septum

23

Tongue development occurs which Pharyngeal Arches

1st, 2nd, and 3rd

24

During tongue development, the 1st pharyngeal arch forms

Anterior 2/3 Tongue from Ectoderm
(Two lateral lingual prominences & Central prominence)

25

During tongue development, the 2nd and 3rd pharyngeal arch forms

Posterior 1/3 Tongue from Endoderm (3rd overgrows 2nd)
Middle Hypobranchial Eminence

26

The Thyroid develops in gut as invagination between _____ and _______ at _______

Tuberculum Impar and Cupola
Foramen Caecum

27

During week 7 the thyroid lies at level of ______ after passing ventral to hyoid

Laryngeal Primordia