PSYB65H3 Chapter 13: Chapter 13 - Neural Development and Developmental Disorder

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Chapter 13 neural development and developmental disorder. Early in embryonic life (~3 weeks), the neural plate (cells that are on dorsal to surface of embryo, which becomes ns) forms form the ectoderm of the embryo. Cells of dorsal ectoderm in neural plate are stem cells that are pluripotent have potential to develop into different types of ns cells. As development progresses, neural plate starts to form a grove, which by day 24 becomes neural tube (different sections of neural tube becomes different parts of ns. During 3-5th month of gestation, rapid cell proliferation and neural migration are dominant events. The cells w/i ventricular zone are rapidly dividing, process called proliferation. By day 40, there are 3 prominent bumps on anterior portion of neural tube forebrain, midbrain, and. In 2nd month of gestation, telencephalon undergoes tremendous growth, developing form cortical plate. Once neurons migrate, they begin to grow axons and dendrites and to differentiate into their final form.