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Questions and Answers
What is the future site of the vertebral column?
What is the future site of the vertebral column?
- Neural tube
- Notochord (correct)
- Primitive node
- Neural crest
During neurulation, what signals overlying ectoderm for the formation of the spinal cord and brain?
During neurulation, what signals overlying ectoderm for the formation of the spinal cord and brain?
- Intermediate mesoderm
- Neural groove
- Notochord (correct)
- Paraxial mesoderm
Which structure begins to differentiate lateral to the notochord around week 3?
Which structure begins to differentiate lateral to the notochord around week 3?
- Notochord
- Neural tube
- Intermediate mesoderm (correct)
- Neural crest
At what stage does the closure of the neural tube begin?
At what stage does the closure of the neural tube begin?
What cavity is formed by the split of the lateral plate mesoderm?
What cavity is formed by the split of the lateral plate mesoderm?
What is formed by the division of mesoderm into three regions?
What is formed by the division of mesoderm into three regions?
Which primary brain vesicle does the forebrain develop from?
Which primary brain vesicle does the forebrain develop from?
'Breach of cloacal membrane' occurs at which stage of development?
'Breach of cloacal membrane' occurs at which stage of development?
What process involves the formation of pronuclei, alteration of the ovum, and fusion of pronuclei during fertilization?
What process involves the formation of pronuclei, alteration of the ovum, and fusion of pronuclei during fertilization?
Which structure proliferates and differentiates into two layers, including syncytiotrophoblast and cytotrophoblast?
Which structure proliferates and differentiates into two layers, including syncytiotrophoblast and cytotrophoblast?
What characterizes the morula stage of development?
What characterizes the morula stage of development?
What does the primitive streak on the dorsal surface of the epiblast lead to?
What does the primitive streak on the dorsal surface of the epiblast lead to?
During implantation, what disappears by the 5th day allowing the blastocyst to settle into the endometrium?
During implantation, what disappears by the 5th day allowing the blastocyst to settle into the endometrium?
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