CMD 377 Lecture Notes - Lecture 1: Cephalic Flexure, Sulcus Limitans, Neural Crest
Document Summary
Composed of the brain and the spinal cord. Nuclei: group of cell bodies: gray matter. Ganglia: groups of cell bodies outside cns. Autonomic ns: regulation of internal body function. Somatic ns: enable us to perceive sensory stimuli and carry on volitional motor activity. Induction: a process where a part of the embryo sends signals to other parts of the tissue to make changes. Ectoderm: outside layer of the embryo and develops into skin and brain. Mesoderm: connective tissue (bones, ligaments, tissue) o. The neural plate: neural tube and neural crest. As the neural tube closes, it separates from the ectodermal surface: tube forms cns. During fusion, groups of cells from the crest of each neural fold (neural crest cells) separates from neural tube: form pns. The cavity in the neural tube becomes the ventricular system of the brain. The caudal (tail) part of the neural tube (spinal cord and brain) differentiates into 2 plates.
