During the first trimester, the embryo's skin, nervous system and other organs begin to form. A fluid-filled sac protects the embryo, and the placenta and yolk sac develop to nourish it. By the end of the first trimester, the fetus has all its organs and can move its body. In the second trimester, the fetus grows substantially in length and weight, and its heartbeat and face become detectable. By the third trimester, the fetus' bones are fully formed, it stores its own nutrients, positions head-down in the uterus, and continues gaining weight until birth.

1. FETUS DEVELOPMENT
By: Malyssa Johnson, Ayanna Taylor

2. TRIMESTER 1!!!!
 3 weeks after fertilization the outer layer forms the
embryo's skin and nervous system
 The inner layer forms the digestive tract and lungs
 The middle forms other organs
 A fluid filled sac forms to protect the embryo from physical
impact

3. TRIMESTER 1 CONT..
Then the yolk sac membrane forms gametes
The placentas develops and surrounds the
embryo
Lastly by the end of the trimester the fetus has all
its organs and can move its body features

4. SEE!!!!

5. TRIMESTER 2
The fetus increases in length and weighs .5 kg
Fetus now has a face
The fetal heartbeat is now easily detected
Fetus starts to fill up much of the space in the
uterus

7. TRIMESTER 3
Bones are fully developed
Fetus stores its own calcium and iron
Fetus descendes in the head down position
Fetus gains more weight

8. TRIMESTER 3 CONT.….
There is a decline in fetal movement
All organs are fully developed
In weeks 37-40 fetus should weigh about
6-10 pounds