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Questions and Answers
What is the initial event that marks the beginning of neurulation?
What is the initial event that marks the beginning of neurulation?
- Development of the notochord (correct)
- Differentiation of neural crest cells
- Involution of the neural plate
- Formation of the neural tube
Which structure arises from the neural plate border during neurulation?
Which structure arises from the neural plate border during neurulation?
- Neural crest cells (correct)
- Notochord
- Enteric neurons and glia
- Brain and spinal cord
What complication arises when there is a failure to close the caudal neuropore at day 26?
What complication arises when there is a failure to close the caudal neuropore at day 26?
- Anencephaly
- Encephalocoele
- Spina bifida (correct)
- Cranial neuropore fusion
During neurulation, what do the mesodermal growth factors stimulate the ectoderm to form?
During neurulation, what do the mesodermal growth factors stimulate the ectoderm to form?
What is formed by the involution of the neural plate during neurulation?
What is formed by the involution of the neural plate during neurulation?
Which critical period of development includes the formation of brain, heart, eyes, ears, limbs, and external genitalia?
Which critical period of development includes the formation of brain, heart, eyes, ears, limbs, and external genitalia?
What is the correct sequence of stages during embryonic development starting from the blastocyst stage?
What is the correct sequence of stages during embryonic development starting from the blastocyst stage?
Which part of the blastocyst will facilitate implantation and placenta formation?
Which part of the blastocyst will facilitate implantation and placenta formation?
What structures form the bilaminar disc during embryonic development?
What structures form the bilaminar disc during embryonic development?
What is the main difference between the epiblast and hypoblast in the bilaminar disc?
What is the main difference between the epiblast and hypoblast in the bilaminar disc?
What is the role of the morula in embryonic development?
What is the role of the morula in embryonic development?
Which process includes the formation of the amniotic cavity within the bilaminar disc?
Which process includes the formation of the amniotic cavity within the bilaminar disc?
During which embryonic stage do bronchioles develop?
During which embryonic stage do bronchioles develop?
What is the term for the outgrowth of foregut that eventually forms the trachea and bronchial buds?
What is the term for the outgrowth of foregut that eventually forms the trachea and bronchial buds?
What is the role of surfactant in the lungs?
What is the role of surfactant in the lungs?
What occurs if there is not enough surfactant present in the lungs of a newborn?
What occurs if there is not enough surfactant present in the lungs of a newborn?
At what stage of embryonic development does the production of adequate surfactant usually occur?
At what stage of embryonic development does the production of adequate surfactant usually occur?
Where does surfactant synthesis occur in the alveoli?
Where does surfactant synthesis occur in the alveoli?
During gastrulation, where do the epiblast cells migrate through?
During gastrulation, where do the epiblast cells migrate through?
Which layer is formed when the hypoblast is replaced by epiblast cells?
Which layer is formed when the hypoblast is replaced by epiblast cells?
What is the role of the trophoblast during development?
What is the role of the trophoblast during development?
Which structure contains the fluid where the embryo will float?
Which structure contains the fluid where the embryo will float?
Which layer of the trilaminar embryo gives rise to structures like the skeleton, muscles, and heart?
Which layer of the trilaminar embryo gives rise to structures like the skeleton, muscles, and heart?
What is formed when the bilaminar disc transforms into a trilaminar disc during gastrulation?
What is formed when the bilaminar disc transforms into a trilaminar disc during gastrulation?
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