Which choice below shows a correct order of events during development? Gastrula, blastula, neural tube closure, and primary vesicle formation. Blastula, neuroepithelial cell proliferation, axonogenesis and synapse maturation. O Gastrula, dendritogenesis, neural tube closure and synapse formation. O Neural tube closure, notochord formation, dendritogenesis and synapse formation. Axonogenesis, neuronal migration, synapse maturation, synaptic specialization
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- Which of the following describes the importance of the formation of the morula in earlyhuman development?A. it is the process that initiates gastrulationB. it is the process that initiates the formation of the epiblast and hypoblastC. it is the process that initiates the formation of the trophoblast and inner cell massD. it is the process that initiates the formation of the trophoblast and epiblastWhich of the following rows correctly identifies the development of the germ layers? Select one: a. Endoderm Mesoderm Ectoderm Stomach and intestine lining Reproductive system Brain and spinal cord b. Endoderm Mesoderm Ectoderm Muscles Bones Epidermis c. Endoderm Mesoderm Ectoderm Placenta Muscles Hair and nails d. Endoderm Mesoderm Ectoderm Lungs and stomach lining Heart and lungs Liver and pancreasUsing the following list, describe the proper sequence for the events of animal development: 1. Tissues, organs, and other body structures in each segment are formed. 2. Axes of the entire animal are determined. 3. Cells become differentiated. 4. The entire animal is divided into segments. a. 2, 3, 4, 1 b. 1, 2, 4, 3 c. 2, 4, 3, 1 d. 3, 2, 4, 1 e. 2, 4, 1, 3
- Figure 29.22 Which of the following statements about the parts of an amniotic egg are false? The allantois stores nitrogenous waste and facilitates respiration. The chorion facilitates gas exchange. The yolk provides food for the growing embryo. The amniotic cavity is filled with albumen.At which of the following stages of development is a frog embryo composed of the most cells? Group of answer choices A. blastula B. neural tube stage C. gastrula D. zygote (fertilized egg)Match the human development with the week or month of development. Question 30 options: skull, fingers, toes and etc. forms (heart beat is loud) active movement; responsive to sound/light/touch head, torso, arms, legs and reflex actions fully formed and ready to get out! organ systems develop head and tail formed (heart forms) implanation and gastrulation 1. second week 2. third week 3. fouth-fifth week 4. sixth-eight week 5. third-fourth month 6. fifth-seven month 7. eighth-ninth month
- Cystic fibrosis What causes this disorder? The genes/chromosomes that are involved Is the disorder inherited? Role of dominant or recessive genes Any influence from the environment? (Address if/how nature vs. nurture applies to this disorder) Is this diagnosed in utero? How? How the disorder affects prenatal development How the disorder affects postnatal developmentWhich of the following statements relating to axis formation in chickens is FALSE? a. Henson's node secretes proteins that antagonize BMPs. b. The side of the epiblast facing the negative, basic albumin will become the ventral side of the embryo. c. Cells of the posterior marginal zone secrete Nodal to initiate the primitive streak. d. Water and sodium ions are transported from the albumin through the blastodisc cells and into the subgerminal space.Ectodermal Derivatives of the Developing Chick Embryo 33-hour Chick Embryo Transverse Sections 48-hour Chick Embryo Transverse Sections (SEE IMAGE) 72-hour Chick Embryo Transverse Sections Several new structures appear at this stage of development. However, there are also parts that remained essentially unchanged since the 48-hour stage. Go through them very quickly. Epidermis: This epidermal ectoderm derivative is the outermost covering of the embryo. Nervous System Quickly identify again these principal structures from the whole mount. The first sections will show the rhombencephalon in a frontal section due to increased cephalic or cranial flexure in the 72-hour chick embryo. Rhombencephalon: Metencephalon: The anterior portion of the hindbrain has thicker walls than the myelencephalon. The roof becomes the cerebellum and the ventro-lateral walls become the pons. The cavity is the metacoel. It comes from neuromere 6. Myelencephalon: This is the thin-roofed posterior region of…
- Which statement does NOT accurately describe somites? series of tissue blocks form the ribs and intercostal muscles paired structures running along either side of the neural tube derived from neural crest tissue on the ventral surface of the embryoWhat are morphogens, exactly? Explain how they affect the patterning of tissue throughout embryonic development. Give 4 concrete instances to back up your claims.write a correct terminology/word on column B that meet the description of column A 1. the germ cell layer that forms the barin and spinal cord 2. the embryonic folding taht results from rapid development of the central nervous system 3. skin area that is supplied by a single spinal nerve. 4. term that describes the mesoderm that is lateral to teh paraxial mesoderm 5. term that describes the mesoderm taht is close to the notochord 6. the germ cell layer that forms the epithelial lining and glands of the digestive tract and respiratory tracts. 7. paired mesodermal structures formed from the paraxial mesoderm on either side of the neural tube. 8. the developing hindgut od supplied with blood from the.......................mesenteric artery. 9. the embryonic folding that occrs as a result of the rapid growth of the somites. 10. a term that describes the mesoderm in internal organs, including the walls of the digestive and respiratory tracts.