National Society of Histotechnology

Workshop #49: The Placenta: To Know Me Is To Love Me
September 18th, 2000
Milwaukee, Wisconsin

Below are the questions and answers for the quiz distributed during the workshop. (With page in "The Placenta: To Know Me Is To Love Me" textbook where answer can be found, unless otherwise specified.)

    1. At term, the placenta usually weighs and measures:
  • a. 400 grams, 18 x 18 x 3 cm
  • b. 470 GRAMS, 20 x 20 x 2 CM (pg. 61)
  • c. 550 grams, 24 x 20 x 1.4 cm
  • d. 350 grams, 20 x 14 x 2 cm
    2. "Battledore" placenta refers to a:
  • a. right twisted umbilical cord
  • b. velamentously inserted umbilical cord
  • c. MARGINALLY INSERTED UMBILICAL CORD (pg. 61)
  • d. a cord that has been torn off the fetal surface during manual placental removal
    3. Match the following:
  • a. Decidua vera: 4 - decidua in late pregnancy lining uterus and overlying membranes
  • b. Decidua capsularis: 2 - decidua attached to the membranes
  • c. Decidua parietalis: 3 - decidua lining the uterus
  • d. Decidua basalis: 1 - decidua underlying the placenta (pg. 70)
    4. The placenta may be green due to:
  • a. prenatal meconium discharge
  • b. hemosiderin pigment associated with old hemorrhage
  • c. severe ascending infections
  • d. ALL OF THE ABOVE (pg. 40)
    5. There are twice as many veins as arteries on the fetal surface of the placenta.
  • True or FALSE (pg. 72)
    6. Right twisted umbilical cords out number left twisted umbilical cords because more people are right handed.
  • True or FALSE (pg. 62)
    7. Under which circumstances is the Wharton's jelly more likely to be shrunken, contracted (lesser diameter umbilical cord)? (circle all that apply)
  • a. with preterm delivery
  • b. AT TERM (pg. 61)
  • c. POSTDATES
  • d. in association with polyhydramnios
  • e. IN ASSOCIATION WITH OLIGOHYDRAMNIOS
    8. Single umbilical artery (SUA/two vessel umbilical cord), is most often associated with which of the following congenital anomalies?
  • a. tracheo-esophageal fistula
  • b. sirenomelia
  • c. renal dysplasia or agenesis
  • d. OVER 100 MALFORMATIONS ARE ASSOCIATED WITH SUA AND NO ONE ANOMALY PREDOMINATES (pg. 66)
    9. Candida/yeast infection is easily identified on the umbilical cord.
  • TRUE or False (pg. 65)
    10. Which of the following is true?
  • a. meconium may be discharged in response to fetal distress
  • b. meconium may not be discharged in response to fetal distress
  • c. meconium is thought to be a contributing cause to the development of cerebral palsy
  • d. ALL OF THE ABOVE (pp. 158-159)
    11. Which of the following is not true of abruptio placentae?
  • a. THE PLACENTAL PARENCHYMA IS TORN AND FRAGMENTED AT THE SITE OF ABRUPTION (pp. 3, 81)
  • b. the placental maternal surface may show nothing
  • c. the placental maternal surface may show adherent rubbery red to stringy brown blood clot
  • d. is often due to damaged endometrial spiral artery
  • e. the placental parenchyma overlying the abruption often infarcts
    12. Placental tissue requires 24 hours of fixation before tissue processing, because artifacts produced by poor fixation are a major reason pathologists may experience difficulty interpreting some microscopic findings.
  • TRUE or False (pg. 53)
    13. Which of the following are types of placenta extrachorialis? (circle all that apply)
  • a. Subchorial closing ring
  • b. CIRCUMMARGINATE (pp. 58-59)
  • c. CIRCUMVALLATE
  • d. Succenturiate
  • e. All of the above
    14. Which of the following is not a variation of normal seen on the term placenta?
  • a. Squamous metaplasia on the fetal surface
  • b. Right twisted umbilical cord
  • c. Microcalcifications on the maternal surface
  • d. Intervillous thrombi in the parenchyma
  • e. LARGER THAN 3 CM INFARCT IN THE CENTRAL PARENCHYMA (pg. 9)
    15. The placenta is not a messy specimen to examine.
  • True or FALSE

References

  1. Schuler-Maloney D, Lee S: The Placenta: To Know Me Is To Love Me. A reference guide for gross placental examination, published 1998 by DSM PathWorks, Inc., St. Mary's, IA.