Term
| What are the teratogens that can cause craniofacial abnormalities? |
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Definition
Accutane
Toluene
Cigarette smoking
Ionizing radiation
Hyperthermia
Hydantoin |
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Term
| What primordia surrounds the ventral lateral portion of the forbrain? |
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Definition
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Term
| The mandibular arch develops into what facial prominences? |
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Definition
| Maxillary and Mandibullar (1 on each side). All of this is derived from the first pharyngeal arch |
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Term
| What is the name of the primordial mouth? |
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Definition
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Term
| What allows the developing fetus to begin swallowing amniotic fluid? |
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Definition
| rupture of the oropharyngeal membrane |
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Term
| What are the initially convex thickening of ectoderm in facial development? |
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Definition
| Nasal Placodes. Eventually they proliferate into uneven, horseshoe shaped |
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Term
| Nasal placodes lie in depressions named what? |
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Definition
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Term
| What gives rise to the Nasolacrimal duct? |
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Definition
| the nasolacrimal groove between maxillary prominence and lateral nasal prominence |
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Term
| What is the condition in which the nasolacrimal duct does not canalize? |
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Definition
| Atresia of the nasolacrimal duct |
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Term
| Where does the nasolacrimal duct grow? |
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Definition
| In the nasolacrimal groove, initially a solid cord that then canalizes |
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Term
| What forms as medial prominences merge? |
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Definition
| The intermaxillary segment |
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Term
| What does the intermaxillary segment give rise to? |
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Definition
Philtrum of the upper lip
Primary palate |
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Term
| How do the nasal cavities develop? |
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Definition
| Deepening of nasal pits results in primordial nasal sacs |
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Term
| What separates the nasal cavities from the oral cavity? |
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Definition
oronasal membrane and a temporary epithelial plug.
The plug eventually disappears and exposes the two cavaties to each other |
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Term
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Definition
| rigid projections that expose incoming air to a high surface area of cilia meant to trap pathogens |
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Term
| Where do the concha develop? |
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Definition
| form lateral wall of nasal cavities |
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Term
| Olfactory nerves are derived from what? |
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Definition
| Ectodermal epithelium, NOT neural crest |
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Term
| What are the paranasal sinuses? |
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Definition
Frontal
Ethmoid
Sphenoid
Maxillary |
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Term
| What sinus is present at birth? |
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Definition
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Term
| What sinus is present at 1 year? |
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Definition
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Term
| What sinus is present at four years? |
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Definition
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Term
| What sinus is present at 7 years? |
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Definition
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Term
| What forms the premaxillary portion of the palate? |
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Definition
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Term
| What is the primordium of the hard and soft palate? |
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Definition
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Term
| What is the down growth that forms internal parts of the merged medial nasal prominences? |
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Definition
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Term
| Which part of the palate does not ossify? |
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Definition
| posterior part of palate, makes soft palate |
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Term
| What part of the palate ossifies to form the hard palate? |
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Definition
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Term
| What part of the palate ossifies to form the hard palate? |
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Definition
| Lateral process of palate |
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Term
| Space of mouth inside of teeth is called the? |
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Definition
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Term
| Space of mouth outside of teeth is called the? |
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Definition
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Term
| Glands that deposit in the vestibule are derived from? |
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Definition
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Term
| Glands that deposit in the oral cavity are derived from? |
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Definition
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Term
| What are the glands that empty into the oral cavity? |
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Definition
| Submandibular and Sublingual |
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Term
| What is the gland that empties into the vestibule? |
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Definition
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Term
| what malformation is due to failure of the maxillary swelling to fuse with the intermaxillary process? |
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Definition
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Term
| What malformation is due to the failure of the palatine shelves to fuse? |
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Definition
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Term
| What is the malformation caused by a failure in the maxillary and mandibular processes to fuse? How can this present? |
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Definition
| Lateral Cleft face. Ranges from a large mouth to a full thickness defect of the face from mouth to the ear |
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Term
| What is the abnormality that results from a failure of the maxillary and lateral nasal processes fusing? |
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Definition
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Term
| What part of the skull surrounds the brain? |
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Definition
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Term
| What part of the skull forms the skeleton of the face? |
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Definition
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Term
| What part of the neurocranium forms is cartilagenous in origin? |
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Definition
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Term
| What part of the neurocranium is membranous in origin? |
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Definition
flat bones which surround the brain
characterized by the presence of needle-like bone structures (spicules) |
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Term
| What forms the skull base? |
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Definition
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Term
| From what does the chondocranium develop? |
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Definition
| prechordal cartilages, hypophyseal cartilages, and parachordal cartilages |
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Term
| By what ossification process is the chondrocranium formed? |
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Definition
| endochondral ossification |
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Term
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Definition
| unossified mesenchyme present at birth. exist to facilitate birthing |
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Term
| How many fontanelles are present at birth? |
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Definition
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Term
| What are the most prominant fontanelles? |
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Definition
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Term
| What is the condition in which a suture fuses too early? |
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Definition
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Term
| What is scaphocephaly? How does it present? |
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Definition
| sagittal suture has fused prematurely. presents as a long, narrow skull |
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Term
| From where is the viscerocranium derived? |
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Definition
| First two pharyngeal arches |
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