Sexual intercourse- the reproductive process in which the penis is inserted into the vagina and through which a new human life nay begin. Embryo- a developing human, from fertilization through the first 8 weeks of development Placenta- a blood vessel- rich organ that forms in a mother’s uterus and that provides nutrients and oxygen to and removes wastes from a developing human Fetus- a developing human, from the start of the ninth week of pregnancy until delivery Prenatal care- the healthcare provided for a women during her pregnancy
Fertilization- The sperm travels through the uterus and into the fallopian tubes. Only a small fraction of sperm makes it to the egg but it only takes one sperm cell to fertilize the egg Egg divides- The zygote travels down the women’s fallopian tube toward the uterus. The journey takes about 3 to 5 days. The cell divides into 2 cells then into 4 and then into multiple cells
Embryo Implants- implantation of the embryo occurs, then the female is considered to be pregnant Placenta supports the baby- the baby’s growth in the uterus is dependent on a placenta. Most substances including drugs and alcohol can pass through the placenta into the baby.
First Trimester Second Trimester Third Trimester
At 6 weeks the embryo is almost and inch long. Eyelids and ears are forming. The tip of the nose can be seen
At 16 weeks the fetus is 5 to 6 inches long and weighs about 5 ounces. The fetus can yawn, stretch, and even make facial expressions.
At 32 weeks the fetus is about 20 inches long and weighs almost 5 pounds A layer of fat has formed underneath the skin.
Avoid alcohol and other drugs, including caffeine and tobacco and exposure to cigarette smoke. Maintain a nutritious diet that follows the food guide pyramid and eat regular meals. Take prenatal vitamins, prescribed by a healthcare provider, before and throughout a pregnancy Get regular, moderate levels of exercise, if approved by a doctor Have all medical conditions evaluated by a doctor early in the pregnancy
Fetal Alcohol Syndrome- a set of birth defects that affect a fetus that has been exposed to alcohol during pregnancy Miscarriage- death of a fetus from natural complications before the 20 th week of pregnancy Premature Birth- early birth due to abnormal uterus, bleeding behind placenta, STD, multiple pregnancy, or other causes
Dilation- 1 st stage, the uterus contracts, which causes the cervix to dilate or open up. Expulsion- 2 nd stage, the baby’s head emerges fully and the shoulders rotate Placental- 3 rd stage, begins after the delivery of the baby and ends when the uterus expels the placenta and umbilical cord out of the mother’s body.