Development of face, external nose and salivary glands Flashcards
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When does the development of the face begin?
At the end of the 4th week
What are the 5 facial primordia
Single median frontonasal prominence
Paired maxillary and mandibular process
Where are the 5 facial primordia derived from
1st pharyngeal arch
What is the stomodeum
Primitive mouth
When does the mandibular process merge?
4th week
Lower jaw and lip are the first to appear . True or False
True
How long does the facial development take
4-8 weeks
When does the nasal placodes start to develop
End of the 4th week
What separates the lateral nasal prominence from the maxillary prominence
Nasolacrimal Groove
Week 5 the structures of the ear are formed. True or false?
True- 6 auricular hillocks
Which 2 processes merge in the 6th week
Maxillary and Medial Nasal processes
The nasolacrimal groove is formed in the 6th week. True or False?
True
What 2 prominences forms the cheek when fused
Maxillary and Mandibulary prominences
What develops at the end of the 6th week
Primitive jaw
What gives rise to lips and gums
Labiogingival lamina- frows into underlying mesenchyme
When the lamina disintegrates what is formed
Labiogingival groove between lips and gingiva
When the ;abiogingival groove persists it forms:
Labial Frenulum
In week 7-10 what is formed
Intermaxillary segment
What does the intermaxillary segment do
Completes continuity of upper lip and contributes to the formation of Philtrum and Crest of nose
What forms the alae of the nose
Merging of lateral nasal process with the maxillary process
Cleft lip is found mainly in which group
Asians, Native American, Hispanic
