mash
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A 2-year-old boy presents with repeated viral and fungal infections and tetany. Workup reveals hypocalcemia and a marked impairment of cell-mediated immunity resulting from an absence of T cells. Because of these signs and symptoms, the diagnosis of DiGeorge’s syndrome is made. Considering this diagnosis, the absence of T cells is a direct consequence of failure of which embryonic structure to develop?
A. Third pharyngeal pouch
B. Fourth pharyngeal pouch
C. Fifth pharyngeal pouch
D. Ultimobranchial body
E. Foramen cecum
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| peekay
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though confusing but qs specifically ask about T cell deficiency so answer should be
A-3rd pharyngeal pouch
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| rubensssss
Forum Guru
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peekay you are right the answer is A.
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Ruben sssss
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| zaidsuror
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A
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| hellohie
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thymus and inf parathyroid glans are derived from third pharyngeal pouch.
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