Neurulation and Neural Crest Cells
24 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

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?

  • 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?

  • Anencephaly
  • Encephalocoele
  • Spina bifida (correct)
  • Cranial neuropore fusion
  • During neurulation, what do the mesodermal growth factors stimulate the ectoderm to form?

    <p>Neuroectoderm</p> Signup and view all the answers

    What is formed by the involution of the neural plate during neurulation?

    <p>Neural tube</p> Signup and view all the answers

    Which critical period of development includes the formation of brain, heart, eyes, ears, limbs, and external genitalia?

    <p>Week 5-8</p> Signup and view all the answers

    What is the correct sequence of stages during embryonic development starting from the blastocyst stage?

    <p>Compaction -&gt; morula -&gt; implantation &amp; embryonic disc formation -&gt; gastrulation -&gt; neurulation</p> Signup and view all the answers

    Which part of the blastocyst will facilitate implantation and placenta formation?

    <p>Outer cell mass (trophoblast)</p> Signup and view all the answers

    What structures form the bilaminar disc during embryonic development?

    <p>Epiblast &amp; hypoblast</p> Signup and view all the answers

    What is the main difference between the epiblast and hypoblast in the bilaminar disc?

    <p>Epiblast develops into the embryo while hypoblast forms the yolk sac.</p> Signup and view all the answers

    What is the role of the morula in embryonic development?

    <p>Forms the blastocyst</p> Signup and view all the answers

    Which process includes the formation of the amniotic cavity within the bilaminar disc?

    <p>Gastrulation</p> Signup and view all the answers

    During which embryonic stage do bronchioles develop?

    <p>Canalicular stage</p> Signup and view all the answers

    What is the term for the outgrowth of foregut that eventually forms the trachea and bronchial buds?

    <p>Respiratory Diverticulum</p> Signup and view all the answers

    What is the role of surfactant in the lungs?

    <p>Aids in keeping alveoli open</p> Signup and view all the answers

    What occurs if there is not enough surfactant present in the lungs of a newborn?

    <p>Alveolar collapse</p> Signup and view all the answers

    At what stage of embryonic development does the production of adequate surfactant usually occur?

    <p>Term Stage</p> Signup and view all the answers

    Where does surfactant synthesis occur in the alveoli?

    <p>Type II pneumocytes</p> Signup and view all the answers

    During gastrulation, where do the epiblast cells migrate through?

    <p>Primitive streak</p> Signup and view all the answers

    Which layer is formed when the hypoblast is replaced by epiblast cells?

    <p>Endoderm</p> Signup and view all the answers

    What is the role of the trophoblast during development?

    <p>Forms extraembryonic mesoderm</p> Signup and view all the answers

    Which structure contains the fluid where the embryo will float?

    <p>Extraembryonic coelom</p> Signup and view all the answers

    Which layer of the trilaminar embryo gives rise to structures like the skeleton, muscles, and heart?

    <p>Mesoderm</p> Signup and view all the answers

    What is formed when the bilaminar disc transforms into a trilaminar disc during gastrulation?

    <p>Three germ layers</p> Signup and view all the answers

    More Like This

    Ninja Nerd- Embryology- Neurulation
    38 questions
    Neurulation and Organogenesis
    24 questions
    Neurulation and Neural Tube Quiz
    24 questions
    Use Quizgecko on...
    Browser
    Browser