The document outlines the development of a fetus over the three trimesters of pregnancy. In the first trimester, the fetus grows from the size of a fist to a grapefruit. During the second trimester, the fetus' ears form and the mother can feel movements between 18-22 weeks. In the third trimester, the fetus' bones are developed, its eyes are open, and it can control its body temperature.

1. The Development of the Fetus.
By: Erika Pena

2. Fertilization of the Fetus

3. 1st Trimester
• The first trimester in
pregnancy is week 1
through week 12.
• Having reached a little
more then an inch the
fetus has grown from
the size of a fist to the
size of a grapefruit.

4. 2nd Trimester
• At this point you’ll be
able to feel your baby
moves after 18 to 22
weeks.
• Also the baby’s ears
begin to form and they
might be able to hear.

5. 3rd Trimester
• At this point of your
pregnancy your baby’s
bones have developed
, his eyes are opened
and he is able to control
his body temperature.

6. Week by week development.