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29 Cards in this Set
- Front
- Back
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The primitive streak, three pairs of somites, notochord, and nerual tube all develop during which week?
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Week 3
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The celiac ganglion, pineal gland, neurohypophysis, and spinal cord are all developed from:
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neuroectoderm
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The hypobranchial eminence is lined by
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endoderm
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Which arch contributes to the developent of the external ear?
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The first branchial arch
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Nearly 50% of diaphragmatic hernias occur through
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The esophageal hiatus
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The ependymal layer in the eye ultimately gives rise to
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the rods and cones
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The umbilical coelom is unrelated to GI developmet after which week?
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Week 10
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The entire GI epithelium from the oropharyngeal membrane to the anal membrane is derived from:
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endoderm
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Underdeveloped medial nasal prominences results in absence of:
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the philtrum
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If the intermaxillary segment fails to unite with the structures derived from the maxillary prominence, what results?
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a unilateral complete anterior cleft
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Most of the floor of the nasal cavity is derived from
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maxillary prominences
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All 42-44 pairs of somites are present at week:
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Week 5
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Which somites are variable in number?
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coccygeal
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The organ system in which congenial malformations occur most frequently is:
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musculoskeletal
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Primitive sex cords in males develop into:
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seniniferous cord epithelium
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Name two bones that undergo both intramembranous and endochondral ossification
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Mandible & Clavicle
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Germ layer of the cornea
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ectoderm and mesenchyme
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germ layer of the hymen
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endoderm
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germ layer of the primary palate
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ectoderm
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germ layer of the lens vesicle
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ectoderm
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The UG folds form what kind of boundary
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ectoderm-endoderm boudary
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The crua of the clitois comes from:
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phallic mesenchyme
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The roof of the phallic portion of the UG sinus comes from
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urethral plate
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Vestibular membrane comes from:
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surface ectoderm
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Muscles of the iris come from
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neural tube
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Epithelium of the ciliary body comes from
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Neural tube
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May give rise to Gartner's duct cysts
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mesonephric ducts
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participates in the formation of the central tendon of the perineum
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urorectal septum
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induces the formation of the sinus tubercle in the male
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paramesonephric ducts
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