Determining The Gestation Period Placenta May Play Key Role

Placenta may play a central role in determining the gestation period for humans and other mammals, according to a new study. Research links growth rate of mammals in the womb of the structure of the placenta and how it connects mother and child.

This size and mammals may explain variations in gestation time. If a pregnancy lasts nine months, a field mouse charger, after only three weeks.

Placenta plays a crucial role in mammalian reproduction, transferring nutrients and oxygen from mother to fetus and removing waste from the fetus. The structure of the placenta, however, varies greatly from species to species. This new study suggests that these variations may play a role in the duration of pregnancy.

The researchers analyzed 109 species of mammals. What they found was more complex and folded in placental mammals, the shorter the time of pregnancy appeared to be.

What they think is happening is that the more bent placentas are able to provide more nutrients to the baby, has spurred growth, and thus reduce the gestation period. more complex placenta was found in mice that have a gestation period of about three weeks, the dogs (two months) and leopards (three months).

But humans and other primates such as baboons were seen as easier in the placenta where it crosses fewer nutrients to the fetus, resulting in slower growth rates and longer gestation.

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