1- Provides signals that transform ectoderm into neural tissue
neural plate
notochord
neural tube
overlying ectoderm

2- As the neural plate becomes narrower and longer, there is
aposition of dorso-ventral surfaces
lateral folding, elevating the sides along a midline neural groove
separation from the overlying endoderm
closure of the cranial tube

3- Beguins midway along the cranial length of the nervous system at about day 22.
notochord induction of the overlying ectoderm
thickening of the neural plate
folding of the neural plate
closure of the neural tube

4- Undergoes rough organization by a series of divisions soon after formation of the neural tube
future brain region
future spinal chord region
neural crest
notochord

5- Closure defect of the brain
rachischis
cranioschisis
elevated a-fetoprotein
nerulation

    Your Score: %

You can review the correct answers  below. If you did well, take a break first and visit our sponsor:

Continue scrolling to answers below.

Hey! DON'T PEEK!!! Finish the test fist!

Answers:

1- Provides signals that transform ectoderm into neural tissue
Answer: notochord

2- As the neural plate becomes narrower and longer, there is
Answer: lateral folding, elevating the sides along a midline neural groove

3- Beguins midway along the cranial length of the nervous system at about day 22.
Answer: closure of the neural tube

4- Undergoes rough organization by a series of divisions soon after formation of the neural tube
Answer: future brain region

5- Closure defect of the brain
Answer: cranioschisis