Fetal circulation

Question 1

Another name for median umbilical ligament

Answer 1

Urachus

Question 2

What is the median umbilical ligament a remnant of?

Answer 2

Fetal allantois

Question 3

Lateral umbilical ligament attachments

Answer 3

Pass from internal iliacs to umbilicus

Question 4

Another name for urachus

Answer 4

Median umbilical ligament

Question 5

Lateral umbilical ligaments are remnants of

Answer 5

Umbilical arteries

Question 6

Umbilical vein remnant and location

Answer 6

Ligamentum teres

Ascend from umbilicus to liver between the two layers of the falciform ligament

Question 7

Ductus venosus location

Answer 7

Inferoposterior liver

Question 8

Ductus venosus components

Answer 8

Umbilical vein

Left branch portal vein

Question 9

Function of ductus venosus

Answer 9

Allows oxygenated blood of umbilical vein to bypass hepatic sinusoids

Question 10

Changes in ductus venosus after birth

Answer 10

Blood in umbilical vein clots and this extends to ductus venosus
Become fibrous cords that are usually in continuity: umbilical vein as ligamentum teres and ductus venosus as ligamentum venosum

Question 11

Which embryonic structure is represented by the nucleus pulposus in the adult vertebrae?

Answer 11

Notochord

Question 12

Which blood does the ductus venosus carry?

Answer 12

Oxygenated from umbilical vein to IVC