Cleft Palate Exam 1
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| Embryo | First stage of development (fertilization to 8 wks)
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| Fetus | 8 wks to brith, organs start to function and genitalia visible on ultrasound
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| When does neural tube develop? | 18 to 20 days
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| What does the neural tube become? | Brain and spinal cord
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| What is the earliest developing embryonic structure? | Spinal cord
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| What should mothers do at 8 weeks? | Stop retinol, and start taking folic acid and prenatal
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| What is on the side of the neural tube? | Buds
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| What do buds become? | Organs
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| When do the buds form? | 4 weeks
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| 4-5 weeks | Embryo goes from extended to flexion stage, more buds form
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| Buds that form at 4-5 weeks are representative of the ________ | Forebrain
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| 32 days | Buds on either side come together
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| 6 weeks fetus is _______ | 8 mm
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| What happens at around 8 weeks? | Ears develop
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| Where do ears develop? | Lower than they are at brith
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| What are low ears a sign of at or after birth? | Many developmental/genetic syndromes
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| Growth directions of face | Anteriorly, medially, inferiorly
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| Premodia | Early, primitive structure
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| Frontal Prominence turns into | Foreheard
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| Nasal Palacode and nasal pit become | Nostril
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| Nasolateral process becomes | alar rim
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| Maxillary process | Maxilla
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| Mandibular arch | Mandible
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| Hyoid arch | Hyoid bone
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| Structures formed from frontal process | Nasal pits, upper lip
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| When nasal pits fusion in median and lateral regions of frontal process | it becomes nostrils
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| Upper lip is formed from fusion of | maxillary and median frontal processes and merging of median nasal
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| What happens to maxillary process in 7th week? | Mouth opening is smaller and checks are rounded bulges
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| What happens on mandibular process in 7th week? | Ear appear lateral and posteriorly as low sets
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| What happens on hyoid arch in 7th week? | Almost complete ring of tissue around EAM
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| Fusion | 2 processes uniting, 2 structures into 1
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| Merging | Laters below push up epithelium and fill in gaps (not 2 structures coming together)
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| Which is more susceptible to breaking apart? (merging or fusion) | Fusion
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| What happens to hard palate in 7th week? | Premaxillae from and palatine processes are in a vertical orientation
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| What happens to oral and nasal cavities in 7th week? | They are not separated and tongue is in both
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| What makes up hard palate? | Premaxillae and 2 palatine processes
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| What happens in the 9th week? | Palate growth spurt
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| What does oral cavity do during palate growth spurt? | Enlarges
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| Tongue in 9th week | Drops down
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| Hard palate in 9th week | Palatine processes can go horizontally now and head towards midline
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| What fuses in 9th week? | Palatine provess, starts anteriorly to posteriorly,
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| What is the last thing to fuse on midline suture hard palate? | Uvula
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| What happens if uvula doesn't completely fuse? | Bifid palate
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| Being to detect cleft lip at | 13 weeks
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| What can't be diagnosed on ultrasound? | Cleft palate, you have to be able to look inside oral cavity
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| Why could someone have a normal palate but bifid uvula? | It is the last structure to fuse
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