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Correct Answer » A
Explanation
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The type of placenta insertion shown in the photograph above represents Velamentous.
Velamentous cord insertion is an abnormal condition during pregnancy. Normally, the umbilical cord inserts into the middle of the placenta as it develops.In a velamentous cord insertion, the umbilical cord inserts into the fetal (chorio-amniotic) membranes outside the placental margin and then travels within the membranes to the placenta (between the amnion and the chorion). It is thought to result from remodeling of the placenta as a response to factors that affect distribution of uterine blood flow (a process known as trophotropism). A marginal cord insertion may evolve into a velamentous cord insertion as the pregnancy progresse.
