BIO 351 Module 3 | Expert Strategies,
Review of Key Practice Questions and
Verified Detailed Answers; for Guaranteed
Success
This BIO 351 Module 3 exam primarily assess principles of developmental
neurobiology, neural tube formation, and cellular signaling. The exams focus on
the embryonic origin of the nervous system, cell-fate specification, and the genetic
pathways that govern developmental defects.
Key topics and sample questions include:
1. Neural Tube Formation & Patterning
Exam Description: Tests your understanding of how the nervous system
transitions from a flat neural plate into a folded neural tube.
• Key Concept: The neural tube derives from the ectoderm and forms via
folding that begins when cells of the medial hinge point anchor to the
notochord.
• Sample Question: Pick the TRUE statement regarding the formation of the
neural tube.
• Answer: Folding of the neural tube is initiated when cells of medial hinge
point (MHP) anchor to the notochord and epidermal cells migrate toward
the dorsal midline.
• Sample Question: Which of the following defects is a severe open neural tube
defect caused by failure of rostral neural tube closure?
• Answer: Anencephaly.
2. Cell Specification & Signaling
Exam Description: Evaluates the molecular mechanisms of cell differentiation
and cell-to-cell signaling (e.g., juxtacrine signaling).
3. Neural Crest and Brain Development
1
, Exam Description: Focuses on the migration and differentiation of neural crest
cells, as well as rostral to caudal organization of the central nervous system.
• Key Concept: Neural Crest cells delaminate from the dorsal neural tube
and differentiate into the peripheral nervous system.
• Sample Question: Which of the following central nervous system structures
are correctly listed in a rostral to caudal order?
• Answer: Cerebrum, Pons, Spinal Cord.
Quiz_________________?
The neural tube forms from the folding of the neural plate. Which region of the
neural tube is the first to close? -
Answer
B
Quiz_________________?
The brain is derived from which of the following: -
Answer
ectoderm
Quiz_________________?
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 hingepoint cells
2
Review of Key Practice Questions and
Verified Detailed Answers; for Guaranteed
Success
This BIO 351 Module 3 exam primarily assess principles of developmental
neurobiology, neural tube formation, and cellular signaling. The exams focus on
the embryonic origin of the nervous system, cell-fate specification, and the genetic
pathways that govern developmental defects.
Key topics and sample questions include:
1. Neural Tube Formation & Patterning
Exam Description: Tests your understanding of how the nervous system
transitions from a flat neural plate into a folded neural tube.
• Key Concept: The neural tube derives from the ectoderm and forms via
folding that begins when cells of the medial hinge point anchor to the
notochord.
• Sample Question: Pick the TRUE statement regarding the formation of the
neural tube.
• Answer: Folding of the neural tube is initiated when cells of medial hinge
point (MHP) anchor to the notochord and epidermal cells migrate toward
the dorsal midline.
• Sample Question: Which of the following defects is a severe open neural tube
defect caused by failure of rostral neural tube closure?
• Answer: Anencephaly.
2. Cell Specification & Signaling
Exam Description: Evaluates the molecular mechanisms of cell differentiation
and cell-to-cell signaling (e.g., juxtacrine signaling).
3. Neural Crest and Brain Development
1
, Exam Description: Focuses on the migration and differentiation of neural crest
cells, as well as rostral to caudal organization of the central nervous system.
• Key Concept: Neural Crest cells delaminate from the dorsal neural tube
and differentiate into the peripheral nervous system.
• Sample Question: Which of the following central nervous system structures
are correctly listed in a rostral to caudal order?
• Answer: Cerebrum, Pons, Spinal Cord.
Quiz_________________?
The neural tube forms from the folding of the neural plate. Which region of the
neural tube is the first to close? -
Answer
B
Quiz_________________?
The brain is derived from which of the following: -
Answer
ectoderm
Quiz_________________?
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 hingepoint cells
2
