Immature Fetal Brain

Immature Fetal Brain •Superior view of cerebral hemispheres of 18-20 week gestation fetus. •Note the lack of convolutions except for the beginning of the central fissure. •No convolutions are characteristic of this age fetus. •From this gestational age on, more and more convolutions are formed. •A normal complement is formed by 40 weeks. (Description By:Margaret Grunnet,M.D. ) (Image Contrib. by: UCHC )