Development of the Face and Palate Flashcards
When does development of the face take place
4-8 weeks in utero
When does development of the palate take place
Approx. 6-10 weeks
When is the earliest bone laid down in the skull and where
Around 6/7 weeks in the mandible
What does the first pharyngeal arch give rise to
Trigeminal nerve Muscles of mastication Malleus Incus Meckel’s cartilage
What does the second pharyngeal arch give rise to
Facial nerve
Muscles of facial expression
Hyoid bone
What does the third pharyngeal arch give rise to
Glossopharyngeal nerve
Stylopharyngeus
Common carotid artery
Hyoid bone
What do the fourth and sixth pharyngeal arches give rise to
Vagus nerve Muscles of pharynx Larynx Aortic arch Laryngeal cartilages
What are the 5 prominences of the face
Frontonasal Paired maxillary Paired mandibular Medial nasal Lateral nasal
What does the frontonasal prominence give rise to
Forehead
Bridge of nose
What does the medial nasal prominence give rise to
Midline of nose
Philtrum of upper lip
What does the lateral nasal prominence give rise to
Alae of nose
What does the maxillary prominence give rise to
Cheeks
Lateral upper jaw
What does the mandibular prominence give rise to
Lower lip
Jaw
How is the primary palate formed
Medial nasal processes form intermaxillary process
This gives rise to the philtrum of the lip and the primary palate
How is the secondary palate formed
Maxillary prominences give rise to lateral palatal shelves (secondary palate)
