1. First Trimester and Cocaine as a Teratogen
By Leland, Garron, Rob, Elizabeth

2. 1st to 4th Week
-fertilization and implantation occurs -embryotic development occurs (nervous system, heart, and circulatory system)

3. 5th Week
-first heart beats begin -umbilical cord, lungs, and brain start to develop -basic facial features, arm buds and leg buds, start to develop

4. 6th ,7th Week
-arms, legs, nostrils, lenses of the eye, intestines and pancreas start to appear or grow -elbows, fingers, feet, ears, and nose start to appear -intestines start to form in the umbilical cord

5. 8th Week
-cartilage and bones begin to form -eye is well under way of development -tongue begins form -intestines move toward abdomen -in males testosterone starts to be produced -about the size of a chicken egg

6. 9th Week -baby begins movement -most joints are formed
-finger prints are evident
-the baby is now a fetus

7. 10th Week
-baby’s head is half its length -placenta begins to function -eyelids fuse shut

8. 11th Week -nearly all structures are formed
-finger and toes are now separated
-genitals now take on the proper gender characteristics
-more amniotic fluid
-intestinal-muscle contractions

9. 12th Week
-vocal cords begin to form -facial features move into place -insulin in produces -intestines move further into body

10. Teratogen
Cocaine

11. Effects
-causes, miscarriage, premature birth, abrutio placenta. -increases heart rate of mother and baby -decreases oxygen to baby -bleeding of brain -spontaneous abortion 38% of the time

12. -increased uterine contractions causing premature births -less maternal blood gets to the baby -lack of nutrition -cocaine crosses the placenta to the baby