The Heart Cont.

Question 1

Fetal by-pass structures

Answer 1

Ductus venosus
Ductus arteriosus
Foramen ovale

Question 2

Umbilical Arteries

Answer 2

Carry less oxygenated blood from the fetus to the placental circulation for oxygenation and waste elimination

Question 3

Umbilical Veins

Answer 3

Carry oxygen and nutrient-rich blood from the placenta to the fetus

Question 4

Ductus Venosus

Answer 4

Connects umbilical vein with caudal vena cava
Blood bypasses the liver
Adult structure - ligamentum venosum

Question 5

Foramen Ovale

Answer 5

Shunts blood from the right atrium to the left atrium
Blood bypasses the pulmonic circulation
Adult structure - fossa ovalis

Question 6

Ductus Arteriosus

Answer 6

Shunts blood from the pulmonary trunk to the aorta
Blood bypasses the pulmonic circulation
Adult structure - ligamentum arteriosum

Question 7

PDA

Answer 7

Patent Ductus Arteriosus; condition in which the ductus arteriosus remains open after birth. In some cases allows poorly oxygenated blood to flow in the wrong direction