First Trimester and Cocaine as a Teratogen

By Leland, Garron, Rob, Elizabeth

1st to 4th Week

-fertilization and implantation occurs-embryotic development occurs (nervous system, heart, and circulatory system)

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

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

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

9th Week

-baby begins movement-most joints are formed-finger prints are evident-the baby is now a fetus

10th Week

-baby’s head is half its length-placenta begins to function-eyelids fuse shut

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

12th Week

-vocal cords begin to form-facial features move into place-insulin in produces-intestines move further into body

Cocaine

Teratogen

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

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