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| ==Take the Quiz==
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| <quiz display=shuffle>
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| {Ectoderm refers only to the neural plate region of the trilaminar embryo
| | Can only put one quiz on a page. |
| |type="()"}
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| - true
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| || The entire layer of the trilaminar embryo is the '''ectoderm''' (meaning outer layer), the neural plate is only the central portion of this layer.
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| Here are a few simple questions that relate to early ectoderm development. Take the quiz and see what you know, if you get some wrong, try working through through the [[2009_Lecture_6|Embryology Lecture on Ectoderm]].
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| {The central nervous system forms in the sequence:
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| |type="()"}
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| - norochord to neural plate to neural tube
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| - neural tube to neural plate to neural groove
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| + neural plate to neural groove to neural tube
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| - neural plate to neural crest to neural zone
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| ||The sequence '''neural plate to neural groove to neural tube''' represents the gradual folding of a flat surface sheet of ectodermal cells into a closed tube isolated from the embryo surface. The '''notochord''' is part of the mesoderm and regulates the initial overlying differentiation process. The '''neural crest''' are a population at the edge of the neural plate that do not get incorporated into the neural tube. I think I made up '''neural zone'''.
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| {The neural plate is narrower at the caudal (tail) end and therefore closes earlier than the broad cranial (head) end.
| | * 2013 - [[Foundations Quiz]] page has been accessed 6,726 times. |
| |type="()"}
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| - true
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| || The caudal or posterior neuropore closes after the cranial or anterior neuropore.
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| {The correct sequence from cranial to caudal of the secondary brain vesicles is:
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| |type="()"}
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| - prosencephalon, mesencephalon, metencephalon, myelencephalon, rhombencephalon | |
| - telencephalon, diencephalon, metencephalon, mesencephalon, myelencephalon
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| + telencephalon, diencephalon, mesencephalon, metencephalon, myelencephalon
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| - prosencephalon, diencephalon, mesencephalon, myelencephalon, metencephalon
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| ||The '''prosencephalon''' and '''rhombencephalon''' are primary brain vesicles. The others are distractors using your lack of understanding of what the terms mean.
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| </quiz>
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