Block 6 GI Embryo Body Cavi BRS W Exp

19 Questions | Total Attempts: 135

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Block 6 GI Embryo Body Cavi BRS W Exp

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Questions and Answers
  • 1. 
    A congenital diaphragmatic hernia may  result from failure of the
    • A. 

      Septum transversum to develop

    • B. 

      Pleuroperitoneal membranes to fuse in a normal fashion

    • C. 

      Pleuropericardial membrane to develop corn pletely

    • D. 

      Dorsal mesentery of the esophagus to develop

    • E. 

      Body wall to form the peripheral part of the diaphragm

  • 2. 
    A congenital diaphragmatic hernia most commonly occurs
    • A. 

      On the right anteromedial side

    • B. 

      On the right posterolateral side

    • C. 

      On the left anteromedial side

    • D. 

      On the left posterolateral side

    • E. 

      Anywhere on the left side

  • 3. 
    A congenital diaphragmatic hernia is usually life-threatening because it is associated with
    • A. 

      Pulmonary hypoplasia

    • B. 

      Pulmonary hyperplasia

    • C. 

      Physiologic umbilical hernia

    • D. 

      Liver hypoplasia

    • E. 

      Liver agenesis

  • 4. 
    An 8-day-old boy presents with a history of complete loss of breath at times and of turning blue on a number of occasions. If the baby is placed in an upright or sitting position, his breathing improves. Physical exam  reveals an unusually flat stomach when the newborn is lying down; auscultation demonstrates  no breath sounds on the left side of the thorax. What is the diagnosis?
    • A. 

      Physiologic umbilical herniation

    • B. 

      Esophageal hiatal hernia

    • C. 

      Tetralogy of Fallot

    • D. 

      Congenital diaphragmatic hernia

    • E. 

      Tricuspid atresia

  • 5. 
    During week 4, the developing diaphragm is located at
    • A. 

      C3, C4, C5

    • B. 

      T3, T4, T5

    • C. 

      T8, T9, T10

    • D. 

      1,1, L2, L3

    • E. 

      L4, L5, L6

  • 6. 
    An apparently healthy newborn with a hardy appetite has begun feedings with formula. When she is laid down in the crib after feeding, she experiences projectile vomiting. Which of the following conditions is a probable cause of this vomiting?
    • A. 

      Physiologic umbilical herniation

    • B. 

      Esophageal hiatal hernia

    • C. 

      Tetralogy of 1:allot

    • D. 

      Congenital diaphragmatic hernia

    • E. 

      Tracheoesophageal fistula

  • 7. 
    Pancreatic islets consist of alpha, beta, and delta cells, which secrete glucagon, insulin, and somatostatin, respectively. These cells are derived from
    • A. 

      Mesoderm

    • B. 

      Endoderm

    • C. 

      Ectoderm

    • D. 

      Neuroectoderm

    • E. 

      Neural crest cells

  • 8. 
    A 2-month-old baby with severe jaundice also has dark-colored urine (deep yellow) and white clay-colored stool. Which of the following disorders might be suspected?
    • A. 

      Esophageal stenosis

    • B. 

      Annular pancreas

    • C. 

      Hypertrophic pyloric stenosis

    • D. 

      Extrahepatic biliary atresia

    • E. 

      Duodenal atresia

  • 9. 
    A 28-day-old baby is brought to the physician because of projectile vomiting after feeding. Until this time, the baby has had no problems in feeding. On examination, a small knot is palpated at the right costal margin. Which of the following disorders might be suspected?
    • A. 

      Esophageal stenosis

    • B. 

      Annular pancreas

    • C. 

      Hypertrophic pyloric stenosis

    • D. 

      Extrahepatic biliary atresia

    • E. 

      Duodenal atresia

  • 10. 
    Which of the following arteries supplies foregut derivatives of the digestive system?
    • A. 

      Celiac trunk

    • B. 

      Superior mesenteric artery

    • C. 

      Inferior mesenteric artery

    • D. 

      Right umbilical artery

    • E. 

      Intercostal artery

  • 11. 
    The most common type of anorectal malformation is
    • A. 

      Imperforate anus

    • B. 

      Anal agenesis

    • C. 

      Anorectal agenesis

    • D. 

      Rectal atresia

    • E. 

      Colonic aganglionosis

  • 12. 
    The simple columnar or cuboidal epithelium lining the extrahepatic biliary ducts is derived from
    • A. 

      Mesoderm

    • B. 

      Endoderm

    • C. 

      Ectoderm

    • D. 

      Neuroectoderm

    • E. 

      Neural crest cells

  • 13. 
    A 4-day-old baby boy has not defecated since coming home from the hospital even though feeding has been normal without any excessive vomiting. Rectal examination reveals a normal anus, anal canal, and rectum. However, a large fecal mass is found in the colon, and a large release of flatus and feces follows the rectal examination.   Which of the following conditions would be suspected?
    • A. 

      Imperforate anus

    • B. 

      Anal agenesis

    • C. 

      Anorectal agenesis

    • D. 

      Rectal atresia

    • E. 

      Colonic aganglionosis

  • 14. 
    Which one of the following structures is derived from the midgut?
    • A. 

      Appendix

    • B. 

      Stomach

    • C. 

      Liver

    • D. 

      Pancreas

    • E. 

      Sigmoid colon

  • 15. 
    A 3-month-old baby girl presents with a  swollen umbilicus that has failed to heal normally. The umbilicus drains secretions, and  there is passage of fecal material through the umbilicus at times. What is the most likely diagnosis?
    • A. 

      Omphalocele

    • B. 

      Gast roschisis

    • C. 

      Anal agenesis

    • D. 

      Ileal diverticulum

    • E. 

      Intestinal stenosis

  • 16. 
    The midgut loop normally herniates through the primitive umbilical ring into the  extraembryonic coelom during week 6 of development. Failure of the intestinal loops to return to the abdominal cavity by week 11 results in the formation of
    • A. 

      Omphalocele

    • B. 

      Gastroschisis

    • C. 

      Anal agenesis

    • D. 

      Ileal diverticulum

    • E. 

      Intestinal stenosis

  • 17. 
    Kupffer cells present in the adult liver are derived from
    • A. 

      Mesoderm

    • B. 

      Endoderm

    • C. 

      Ectoderm

    • D. 

      Neuroectoderm

    • E. 

      Neural crest cells

  • 18. 
    The simple columnar and stratified columnar epithelia lining the lower part of the anal canal is derived from
    • A. 

      Mesoderm

    • B. 

      Endoderm

    • C. 

      Ectoderm

    • D. 

      Neuroectoderm

    • E. 

      Neural crest cells

  • 19. 
    A baby born to a young woman whose pregnancy was complicated by polyhydramnios was placed in the intensive care unit because of repeated vomiting containing bile. The stomach was markedly distended, & only small amounts of meconium had passed through the anus. What is the most likely diagnosis?
    • A. 

      Esophageal stenosis

    • B. 

      Annular pancreas

    • C. 

      Hypertrophic pyloric stenosis

    • D. 

      Extrahepatic biliary atresia

    • E. 

      Duodenal atresia