Practice Quiz

CPM Certified Professional Midwife

Category - Prenatal

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The umbilical cord is a temporary anatomic structure connecting the fetus to the placenta, and permits the fetal circulation of blood. Which one of the following statements is true about umbilical cord?
  1. Length is 15 - 30 cm
  2. Diameter is 3 - 5 cm
  3. Cord shows a spiral twist from left to right as early as 12th week of pregnancy
  4. Only the arteries do not possess vasa vasorum
Explanation
Answer: C - Cord shows a spiral twist from left to right as early as 12th week of pregnancy

Features of the umbilical cord:
1) Length can be 30 - 100 cm
2) Diameter can be 1 - 2.5 cm
3) False knots may be present
4) Cord shows a spiral twist from left to right as early as 12th week
5) Both the arteries and the veins do not possess vasa vasorum
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