Normal appearance of Brain Vesicles: week by weekDr Vladimir Lemaire, Dr Violetta Lozovyy
High Risk Pregnancy Doctors, Frisco, Texas, United States of America
The following images demonstrate the normal appearance of the brain vesicles at 8 weeks of gestation.
The cephalic end of the neural tube initially contains three vesicles: the prosencephalon (forebrain), the mesencephalon (midbrain), and the telencephalon (hindbrain). The prosencephalon later differentiates into the telencephalon and diencephalon, the rhombencephalon divides into the metencephalon and myelencephalon, while the mesencephalon remains unchanged.
The following images demonstrate the normal appearance of the brain vesicles at 9 weeks of gestation. At this point are easily identifiable: the telencephalon vesicles, the diencephalon, and the rhombencephalon.
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