Posted by esb on October 10, 2011 at 23:36:27:
In Reply to: Nervous System Development - Part 3 posted by amk on October 10, 2011 at 21:28:08:
: Nervous System Development T/F
: 1. The events of neurulation result in the conversion of a bilaminar embryo to a trilaminar embryo.
F - gastrulation?
: 2. The notocord develops in the mesoderm and induces overlying endoderm to form the neural plate.
F - overlying ectoderm?
: 3. The first evidence of eye development appears after the fusion of the posterior (caudal) neuropore.
F - the rostral neuropore?
: 4. Congenital defects of the eye are often located in the superior portion of the globe.
F - inferior
: 5. The lens placode and neural crest cells give rise to the lens.
T - from the lens placode at least. During lens formation, the neural crest cells migrate from the lens to the corneal epithelium. Does that count as "giving rise to"?
: 6. The inner layer of the optic cup gives rise to the neural retina and the outer layer of the optic cup gives rise to the retinal pigmented epithelium.
T
: 7. Neural crest cells give rise to preganglionic sympathetic fibers, postganglionic parasympathetic fibers, and dorsal root ganglia.
T?
: 8. Ventral roots do not contain nerve fibers derived from neural crest cells.
T?
: 9. Neural crest cells migrate from distal to proximal portions of the gut tube.
F - proximal to distal
: 10. The mantle layer of the developing spinal cord becomes the myelinated region of the adult spinal cord.
F - mantle layer becomes the grey matter, marginal layer becomes the myelinated (white) matter.