Pregnancy, Childbirth Flashcards
Only a few hundred sperm that enter the vagina reach the egg, and only one can fertilize it. Within seconds of fertilization, the surface of the egg changes so that no more sperm can enter the egg
Fertilization
The United egg and sperm is called a zygote . Within 36 hours, while the zygote is traveling through the Fallopian tube begins to divide
The zygote
The original cell divided to make 2 cells. From this stage until about 9 weeks, the growing structure is called an embryo. The two-called embryo divides into 4 cells and so on.
Cell division
About 5 days after fertilization, the embryo reaches the uterus, where it floats free for a few days. By this time’ it is made up of about 59 to 100 cells. The structure is no longer a solid mass of cells, but sheer of cells surrounding a hollow center
The Blastocyst
Once the blastocyst forms, it begins to attach itself to wall of the uterus
Implantation
Fluid-filled bag of this tissue that develops around the embryo. The embryo floats in amniotic fluid
Amniotic soc
Attachment holding the embryo to the wall of the uterus. Oxygen and nutrients are passed from the mothers blood to the embryo through the placenta
Placenta
“Embryos lifeline” after 25 days of fertilization*carries nutrients and oxygen through the blood vessels
Umbilical cord
How many more calories does the women have to consume
300 more calories
Why avoid alcohol, other drugs
Can bring harm or damage to the baby, decreas ether chance to life, or life problems
6 important nutrients
Folic acid Protein Calcium Iron Vitamin A Vitamin B complex
Folic acid
Formation of neural tube, brain, and spinal cord development
Protein
Muscle formation and growth
Calcium
Bone and tooth formation, nerve and muscle development
Iron
Oxygen delivery by blood cells