Cord Blood Umbilical Cord 5

Question 1

After birth, the umbilical vein eventually becomes which adult anatomical structure?

Accepted Answer

Round ligament of the liver (ligamentum teres hepatis)

Answer

The umbilical vein obliterates postnatally and becomes the round ligament (ligamentum teres hepatis) of the liver.

Question 2

Which infectious pathogen can be transmitted to the fetus through the umbilical blood vessels and is screened for in cord blood banking units?

Accepted Answer

All of the above

Answer

Cord blood banks screen units for multiple pathogens including CMV, hepatitis B, HIV, and bacterial contamination to ensure transplant safety.

Question 3

What happens to umbilical cord stem cells if the collected volume is too small to meet banking thresholds?

Accepted Answer

The unit is typically discarded or donated to a public bank at reduced threshold

Answer

Units that fall below private banking thresholds are often discarded or redirected to public banks that may accept lower-volume units for research or low-weight patients.

Question 4

What is the primary reason cord blood hematopoietic stem cells can be stored and used decades after collection?

Accepted Answer

Cryopreservation in liquid nitrogen at −196°C halts cellular metabolism

Answer

Cryopreservation in liquid nitrogen essentially stops all biological processes, allowing cord blood stem cells to remain viable for 20+ years.

Question 5

Umbilical cord blood banking for a sibling who has a known genetic disorder is called:

Accepted Answer

Directed allogeneic banking

Answer

Directed allogeneic banking involves storing a newborn's cord blood specifically for use by a related recipient, such as a sibling with a blood disorder.

Cord Blood Practice Test

Cord Blood Practice Test

Cord Blood Umbilical Cord 5