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24 Cards in this Set
- Front
- Back
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entire pharygeal apparatus is apparent at...
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week 4
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neural crest cells give rise to
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skeletal and connective tissue components
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most common site of thyroglossal cysts
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midline, near hyoid
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most common site of pharyngeal cyst
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anterior border of sternocleidomastoid muscle
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common malformation of head and neck
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unilateral cleft lip
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pharyngeal pouch #1
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primitive tympanic cavity & auditory tube
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pharyngeal pouch #2
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palatine tonsil
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pharyngeal pouch #3
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parathyroid gland inferior (connected to start of thymus)
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pharyngeal pouch #4
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parathyroid gland superior & ultimobranchial body
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failure of third pouch results in what disease
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DiGeoge syndrome; immunodeficiency
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underdevelopment of maxillary portion of first arch is what syndrome
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treacher collins
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underdevelopment of the mandibular portion of first arch is..
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robin sequence
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intermaxillary segment of primary palate is formed by..
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fusion of medial nasal swellings & frontonasal prominence
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major portion of the definitive palate forms from...
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lateral palatine shelves, from maxillary prominence
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constrictors of the pharynx
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arch #4, cnX (vagus)
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intrinsic muscles of larynx
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arch #6, cnX's recurrent laryngeal branch
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tongue muscles: innervation and source
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occipital somites, cnXII (hypoglossal)
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taste from anterior 2/3 of tongue
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cnVII's chorda tympani
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taste from posterior 1/3 of tongue
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cnIX (glossopharyngeal)
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junction between 1st pouch and 1st groove
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tympanic membrane
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innervation of tympanic membrane
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externally is via cnV (derived fr 1st arch); internally by cnIX (fr 3rd arch)
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lack or excess of retinoic acid during development causes..
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lack/excess of vitA causes striking facial abnormalities bc of interrupted cell migration
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maldevelopment of thyroid gland leads to
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retardation (cretinism)
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most common site of ectopic thyroid is
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foramen cecum, at root of tongue
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