BIO 351 MODULE 3 TEST QUESTIONS AND
ANSWERS
The neural tube forms from the folding of the neural plate. Which region of the
neural tube is the first to close? - ANSWER B
The brain is derived from which of the following: - ANSWER ectoderm
The nervous system begins as a flat neural plate that runs along the midline
from rostral to caudal. Folding is initiated with the [ Select ] anchored to the [
Select ] and changes shape while the epidermal cells move toward the dorsal
midline. - ANSWER medial hinge point cells
notochord
Crosstalk between the __________ and ectoderm establish patterning that forms
the neural tube. - ANSWER mesoderm
Which of the following defects is a severe open neural tube defect caused by
failure of rostral neural tube closure? - ANSWER anencephaly
The neural tube forms from the folding of the neural plate. Which region of the
neural plate fuses together to form the dorsal neural tube? - ANSWER C
Which of the following is an occult, and not an open, neural tube defect? -
ANSWER Spina bifida occulta
Folate promotes neural tube closure. On a cellular basis, it is necessary for
__________________. - ANSWER nucleotide biosynthesis
The neural tube is regionalized by developmental gene regulation. Which of the
following correctly matches the gene and specified region? - ANSWER Shh -
ventralizing the neural tube
Which of the following regulates the segmentation of the hindbrain
rhombomeres? - ANSWER Hox gene expression
ANSWERS
The neural tube forms from the folding of the neural plate. Which region of the
neural tube is the first to close? - ANSWER B
The brain is derived from which of the following: - ANSWER ectoderm
The nervous system begins as a flat neural plate that runs along the midline
from rostral to caudal. Folding is initiated with the [ Select ] anchored to the [
Select ] and changes shape while the epidermal cells move toward the dorsal
midline. - ANSWER medial hinge point cells
notochord
Crosstalk between the __________ and ectoderm establish patterning that forms
the neural tube. - ANSWER mesoderm
Which of the following defects is a severe open neural tube defect caused by
failure of rostral neural tube closure? - ANSWER anencephaly
The neural tube forms from the folding of the neural plate. Which region of the
neural plate fuses together to form the dorsal neural tube? - ANSWER C
Which of the following is an occult, and not an open, neural tube defect? -
ANSWER Spina bifida occulta
Folate promotes neural tube closure. On a cellular basis, it is necessary for
__________________. - ANSWER nucleotide biosynthesis
The neural tube is regionalized by developmental gene regulation. Which of the
following correctly matches the gene and specified region? - ANSWER Shh -
ventralizing the neural tube
Which of the following regulates the segmentation of the hindbrain
rhombomeres? - ANSWER Hox gene expression
