The Fetus is roughly the size of a pin head.
The brain, spinal cord, internal organs, and circulatory system are developing at this stage.
The lining of the uterus and the egg are attached.
At this stage, the baby is now roughly a quarter inch in size.
The bones begin development as the limbs, eyes, ears, and face take shape.
The embryo is still attached to the wall of the uterus.
The baby is now an inch long.