MS-4049

MS-4049

A 31-year-old woman visits her doctor with her 3-month-old son for a routine check-up. During the visit, the woman expresses her concern about her inability to breastfeed her baby, despite several attempts.

The woman has a medical history of sensorineural deafness, which she acquired after contracting bacterial meningitis as a child.

Her serum prolactin levels are within the normal range at 250 g/L (34-386 ng/mL). The doctor explains that the milk let-down reflex also requires the hormone oxytocin.

Can you identify the part of the brain where oxytocin is synthesized?