Embryology: Upper Face Development & Mid-Face Flashcards Preview

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Flashcards in Embryology: Upper Face Development & Mid-Face Deck (19)
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0
Q

What placodes develop from the lateral to frontonasal process?

A

Lens Placode
Otic Placode
Nasal Placode

1
Q

What five structures develop from the frontonasal process.

A
Forehead
Bridge of Nose
Nasal Septum
Primary palate (premaxilla)
Structures associated with medial nasal processes
2
Q

What does the lens placode give rise to?

A

The lens placode moves medially to give rise to the eyes.

3
Q

What does the otic placode give rise to?

A

It is more posterior and lateral to give rise to the internal ear.

4
Q

What does the nasal placode give rise to?

A

It is anteriorly placed just superior to stomodeum to give rise to olfactory epithelium.

5
Q

What is olfactory epithelium?

A

Lining involved in the sense of smell.

6
Q

How is the nasal cavity created?

A

Developing tissue around nasal placodes submerge the placodes to give rise to the nasal cavity.

7
Q

How do conchae develop?

A

Simultaneously

8
Q

What do medial to nasal placodes develop?

A

They develop medial nasal processes to give rise to the primary palate, incisors and nasal septum.

9
Q

What do the lateral to nasal placodes develop?

A

Lateral nasal processes.

10
Q

What do the lateral nasal processes give rise to?

A

Alae of the Nose

Nares

11
Q

What does the lateral nasal processes combine with to give rise to the nares?

A

Maxillary and Medial Nasal Processes

12
Q

What process is associated with Mid-Face Development?

A

Maxillary Process

13
Q

Where does the maxillary process arise from?

A

Arises from the mandibular arch (mesenchyme of neural crest cells)

14
Q

What will the maxillary process give rise to?

A
Lateral Portion of Upper Lip
Cheeks (zygoma)
2nd Palate
Canines & Some posterior teeth
Portions of the temporal bone
15
Q

What processes contribute to Upper and Lower lip development?

A

Maxillary Process
Medial Nasal Process
Mandibular Arch

16
Q

What structures contribute to form the lateral portion of the upper lip and philtrum?

A

Maxillary Process

Medial Nasal Process

17
Q

How is the lower lip formed?

A

Forms slightly ahead of the upper lip by the mandibular arch.

18
Q

How is the labial commissure formed?

A

By partial fusion of maxillary processes and mandibular arches.