The ductus venosus becomes which structure after birth?

Prepare for the Fetal Echocardiography Test. Utilize flashcards and multiple-choice questions that come with hints and explanations. Ace your exam preparation!

Multiple Choice

The ductus venosus becomes which structure after birth?

After birth, the ductus venosus closes and leaves a fibrous cord in the liver called the ligamentum venosum. This remnant marks where blood from the umbilical vein once bypassed the hepatic sinusoids and flowed directly to the IVC during fetal life. Closure is driven by the switch from placental to neonatal circulation, with increased oxygen tension and reduced prostaglandins promoting fibrous remodeling. The ligamentum venosum is distinct from the ligamentum teres (remnant of the umbilical vein), the ligamentum arteriosum (remnant of the ductus arteriosus), and the fossa ovalis (remnant of the foramen ovale).

After birth, the ductus venosus closes and leaves a fibrous cord in the liver called the ligamentum venosum. This remnant marks where blood from the umbilical vein once bypassed the hepatic sinusoids and flowed directly to the IVC during fetal life. Closure is driven by the switch from placental to neonatal circulation, with increased oxygen tension and reduced prostaglandins promoting fibrous remodeling. The ligamentum venosum is distinct from the ligamentum teres (remnant of the umbilical vein), the ligamentum arteriosum (remnant of the ductus arteriosus), and the fossa ovalis (remnant of the foramen ovale).

More practice questions