Anatomy and Cell Biology 2221 Lecture Notes - Lecture 14: Cerebral Peduncle, Neural Crest, Olfactory Bulb
27 Feb 2015
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Document Summary
Neuronal proliferation: development of neural tube, e 20-21 neuralation. Neural plate starts to form (ectodermal) induced by organization center the notochord. Neural plate starts to fold and forms neural groove. Lateral edges or neural folds move together and contact each other fuse to form a tube that detaches from surface ectoderm: e 23 embryo. Starts to become segmented even before it is completely formed. Closes first in the middle and later on in the anterior (head) end and tail end of the. Disorder: fails to close on tail end spina bifida. Head end forms vesicles and starts to bend vesicles give rise to different parts of brain. Rest of neural tube spinal cord. Lumen of tube neurocoel develops central canal and fluid-filled cavities into. Brain development: hindbrain metencephalon and mylencephalon, midbrain mesencephalon. Forebrain telencephalon cerebral hemispheres & diencephalon (inner brain optic vesicle build retina & optic nerve)
