]> 2026-07-31T09:41:32+00:00 WBR0731 0 en Retina Dorsal root ganglia Schwann cells Parafollicular cells of the thyroid Follicular cells of the thyroid Embryology A 5-year-old boy is brought by his mother to the physician's office for excessive urination. The mother also notes that her child is always complaining he has a dry mouth and is drinking water all the time. Upon further questioning, the physician notes that several members of the patient's extended family have a similar condition. Initial work-up of the patient demonstrates that the patient is normoglycemic and has high-normal levels of plasma osmolality. Water restriction test is performed. It shows an elevated urine osmolality that reaches 1000 mOsm/kg upon administration of antidiuretic hormone (ADH). Which of the following structures is derived from the same embryological origin as that responsible for the patient's condition? A Endocrine 2020-10-28T01:30:50Z 2459150.5630787 WBR0731