The presence of the foramen ovale in a fetus allows what to occur?
A)Right-to-left blood shunting
B)Left-to-right blood shunting
C)Blood flow from the umbilical cord
D)Blood flow to the lungs

Question

Quizplus · Accepted Answer

The nonfused septum secundum and ostium secundum result in the formation of a flapped orifice known as the foramen ovale, which allows the right-to-left shunting necessary for fetal circulation. The foramen ovale is not involved in left-to-right shunting, blood flow from the umbilical cord, or blood flow to the lungs.

The Presence of the Foramen Ovale in a Fetus Allows