Harvey Kleiman

The mother literally doesn't even see that the pregnancy is there.

The next problem that the placenta faces is nutrition.

The next problem that the placenta faces is nutrition.

The next problem that the placenta faces is nutrition.

To make the biggest baby possible, to suck as much nutrients out of the mother as possible. And the pregnant person's mission? Not to die.

To make the biggest baby possible, to suck as much nutrients out of the mother as possible. And the pregnant person's mission? Not to die.

To make the biggest baby possible, to suck as much nutrients out of the mother as possible. And the pregnant person's mission? Not to die.

But one of its other jobs is that it causes the lining of the uterus to secrete HCG. A protein.

But one of its other jobs is that it causes the lining of the uterus to secrete HCG. A protein.

But one of its other jobs is that it causes the lining of the uterus to secrete HCG. A protein.

The lining of the uterus makes milk for the embryo.

The lining of the uterus makes milk for the embryo.

The lining of the uterus makes milk for the embryo.

Into the blood vessels and attack the walls to open them up.

Into the blood vessels and attack the walls to open them up.

Into the blood vessels and attack the walls to open them up.

The uterus stops them. Basically putting up a brick wall, very dense tissue.

The uterus stops them. Basically putting up a brick wall, very dense tissue.

The uterus stops them. Basically putting up a brick wall, very dense tissue.

Now the placenta doesn't give up easily.