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Embryo pt1
| Question | Answer |
|---|---|
| The _____ layer of pleura is tightly adhered to the surface of the lung | Visceral |
| A protein from cell 1 is released into the extracellular matrix, a receptor on cell 2 is able to bind to this ligand. This process is an example of _____ signaling? | Juxtacrine |
| During which phase of meiosis are female gametes arrested at the time of birth | prophase 1 |
| The process of neurulation results in what 3 ectodermal derivatives? | neural tube, neural crest cells, and epidermis |
| What is the maternal component of the placenta is predominantly derived from? | endometrium |
| A patient with Down syndrome is at an increased risk of what type of hemopoietic malignancy? | Leukemia |
| What development pathway is considered the master of embryogenesis? | Sonic Hedgehog (SHH) |
| When is meiosis completed in female gametes | Meiosis II completes only If fertilization occurs |
| The supporting tissues of the body are predominantly derived from which germ layer? | Mesoderm |
| A transversal plane divides the body into ____ and _____ segment | upper (superior) and lower (inferior) |
| A fetus born anytime after the _____ month of gestation has a greater than 90% chance of survival? | 6.5 - 7 months |
| _____ is an epigenetic phenomenon that causes genes to be expressed or not, depending on whether they are inherited from the mother or the father | Genomic Imprinting |
| The anterior surface of the body is also called the _____ surface | ventral |
| Diffusible factors are a feature of which mechanism of signaling? | Paracrine |
| Define aneuploidy | One or more extra or missing chromosomes resulting in and unbalanced chromosome complement OR karyotype that is not equal to a multiple of the haploid number |
| All of the following are derivatives of the endoderm EXCEPT: A. Thyroid B. Liver C. Pancreas D. Heart E. Lining of the gastrointestinal tract | D. Heart |
| The eyes move from the lateral aspect of the head to forward face during the _____ month | 3rd month |
| When does meiosis of male gametes begin? | puberty |
| This vascular lesion is the most common tumor of infancy? | Hemangioma |
| Abnormal placement of an organ during development is called? | Heterotaxy |
| Which meiotic division results in a reduction of chromosome numbers from diploid to haploid? | Meiosis I |
| Vertical plane that divides the body into front and back | Coronal Plane |
| During the formation of the neural tube _____ cells of the lateral border dissociate | Neural Crest Cells |
| Amniotic fluid is predominantly derived from _____ | Maternal Blood |
| Vertical plane that divides the body into left and right | Sagittal Plane |
| Direct connections between two cell membranes allowing the passage of various molecules are called? | Gap Junctions |
| The process results in two genetically identical daughter cells | Mitosis |
| From what germ layer does the central nervous system arise? | Ectoderm |
| The sex of the fetus can be determined on ultrasound at approximately what month mark? | 3rd Month |
| 3 copies of a Chromosome is termed? | Trisomy |
| Mandibular micrognathia, glossoptosis, and cleft palate are the defining features of what developmental condition? | Pierre Robin Sequence |
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toothfairymeg
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