mahendra
Forum Guru
Topics: 173
Posts: 419
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A 3-year-old girl with mild craniofacial dysmorphosis
has profound hearing deficits. Further evaluation
indicates profound sensory auditory deficits and
vestibular problems. Altered development of which of
the following is most likely to account for these
observations?
(A) Ectodermal placode
(B) Intermediate mesoderm
(C) Lateral plate mesoderm
(D) Neural crest cell
(E) Paraxial mesoderm
(F) Prochordal mesoderm
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| asmi
Forum Hero
Topics: 1043
Posts: 4,609
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ITS A
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| Idiopathic
Forum Guru
Topics: 19
Posts: 641
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Yes, I agree. It should be A.
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| leftfoot
Forum Elite
Topics: 29
Posts: 216
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can you guys explain the answer... :oops:
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| Idiopathic
Forum Guru
Topics: 19
Posts: 641
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The sensory surface placodes are formed from ectoderm. The answer A 'ectodermal placodes' corresponds to the otic, nasal and optic placodes, and is also the only answer that has to do with ectoderm.
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| mahendra
Forum Guru
Topics: 173
Posts: 419
|
but the ans is neural crest cell
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| Idiopathic
Forum Guru
Topics: 19
Posts: 641
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I dont like it....but I can see why. They mention senory deficits and vestibular problems, but not conduction deficits. This is a very hard question to research, but it seems as though I have been stumped again. The only other logical answer is neural crest cell.
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| asmi
Forum Hero
Topics: 1043
Posts: 4,609
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really  lets find out about it....
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