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Q: The stage of cell division that occurs without increase in cell size after division is called A Cleavage B Blastulation C Gastrulation D Fertilization Tags: Embryonic Development |

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Q: Which of the following does NOT arise from ectoderm? A epidermis B nervous system C muscoloskeletal tissues D eyes Tags: Embryonic Development |

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Q: The nephron develops from the same germ cell layer as does the: A brain B lining of the digestive tract C retina D heart Tags: Embryonic Development |

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Q: Gastrulation is followed directly by: A nerulation B fertilization C morulation D morphogenesis Tags: Embryonic Development |

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Q: The lining of the digestive tract, the lungs, the liver, and the pancreas are formed from which germ layer? A ectoderm B mesoderm C endoderm D gastroderm Tags: Embryonic Development |

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Q: The invagination of the neural plate produces: A the notochord B the cerebellum C the neural tube D the spine Tags: Embryonic Development |

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Q: In humans, the fusion of the nuclei of two functional gametes results in the formation of a A monoploid cell B zygote C cotyledon D polyploid cell Tags: Embryonic Development |

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Q: Which germ layer is the spinal cord derived from? A Mesoderm B Ectoderm C Endoderm D None of the above Tags: Embryonic Development |

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Q: Which of the following germ layers gives rise to the spinal cord? A Ectoderm B Mesoderm C Endoderm D Intraderm Tags: Embryonic Development |

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Q: Nails develop from the A Endoderm B Ectoderm C Mesoderm D Interderm Tags: Embryonic Development |

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Q: The skin, hair, nails, eyes and central nervous system arise from which germ layer? A endoderm B ectoderm C mesoderm D transderm Tags: Embryonic Development |

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Q: Many embryos experience an ectodermal abnormality caused by the BC5X mutation. Which of the following would not be an expected consequence? A Peripheral nervous deficits B Changes in skin C Blindness D Generalized muscle weakness Tags: Embryonic Development |

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Q: Meiosis II occurs for the production of sex cells (sperm and eggs). For the egg, meiosis II actually occurs after the egg is fertilized by a sperm. Which of the following would not be expected to be found within the egg cell membrane after this meiosis process takes place? A Sperm DNA B Two polar bodies C Enzymes from the sperm D The zona pellucida Tags: Mitosis and Meiosis | Embryonic Development |

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Q: Fetal hemoglobin differs from maternal hemoglobin in that it A Has a right-shifted oxygen saturation curve B Has increased affinity for iron C Has a left-shifted oxygen saturation curve D Has an increased half-life Tags: Embryonic Development | Circulatory System |

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Q: The notochord in the embryo is responsible for A developing into the CNS and PNS B coordinating development of the CNS C developing only into the CNS D differentiating into endodermal structures, such as the gut Tags: Embryonic Development |

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Q: Unipotent stem cells are those which, like other stem cells, undergo perpetual self-renewal while remaining in their undifferentiated state, and can differentiate to produce only one specialized cell type. An example of unipotent stem cells includes: A neurons B myeloid progenitor cell C mesodermal cell D spermatogonia Tags: Embryonic Development |

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Q: Which of the following tissues is not derived from endoderm? A Liver B Pancreas C Brain D Lungs Tags: Embryonic Development |

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Q: Cardiac tissue is derived from which germ layer? A Ectoderm B Mesoderm C Endoderm D Blastoderm Tags: Embryonic Development |

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Q: A human embryo that did not develop mesoderm during gastrulation would result in early termination of the pregnancy. The embryo would be unable to develop which of the following? A nervous system B muscle tissue C skin D digestive tract Tags: Embryonic Development |

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Q: Morphogens are extracellular molecules that govern tissue development and specialization during morphogenesis. Which of the following experiments would NOT constitute support for the existence of morphogens? A Two cells on opposite ends of the morula are switched, causing no developmental difference. B A single cell is removed from the morula, causing the embryo to suffer a significant morphological deformity. C Creating blockers for hypothesized morphogen receptors causes tissue differentiation to stop. D Selective activation of developmental genes increases in frequency as the distance from a particular location in the embryo decreases. Tags: Embryonic Development |

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Q: Which of the following gives rise to the skeletal system? A Notochord B Mesoderm C Endoderm D Ectoderm Tags: Embryonic Development |

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Q: During human development, from which primary germ cell layers do skin and the peripheral nervous system develop? A mesoderm only B mesoderm and ectoderm C ectoderm only D ectoderm and endoderm Tags: Embryonic Development |

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Q: The notochord is derived from the: A endoderm. B ectoderm. C mesoderm. D exoderm. Tags: Embryonic Development |

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Q: Which of the following organs develop from the endoderm? I. gastrointestinal tract II. respiratory tract III. pancreas A I only B I and II only C II only D I, II and III Tags: Embryonic Development |

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Q: Kidney tubules form from the: A endoderm. B ectoderm. C mesoderm. D exoderm. Tags: Embryonic Development |

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Q: Which of the following refers to the innermost tissue layer in a developing embryo? A ectoderm B endoderm C mesoderm D exoderm Tags: Embryonic Development |

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Q: Which of the following is not true regarding the notochord? A it is derived from the endoderm B it is distinct from the neural tube C it is important for the development of the central nervous system D vertebra embryos contain a notochord Tags: Embryonic Development |

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