The house, terms, and month by month information Prenatal Development The house, terms, and month by month information

Review of Fertilization A sperm travels up the v________ where it must go through the C______ to enter into the u_____. At the top of the uterus, the sperm will decide whether to take the right or left F_______ T_____ to find the O_____ An O_____ releases an O ___ (egg) during O________(menstruation). The fimbrae brings the egg into the F_______ T_____. If a S_____ is present in the fallopian tube, then F_________ can take place. Fertilization must take place in the F_______ T____. Only one S ____ may penetrate the O____. Conception has occurred! If more than one ovum is present, they may both be Fer_____ and this will cause multiple births. A fertilized ovum /z________ will travel down the fallopian tubes to the U_____ and implant itself in endometrium L_____ where it will begin to develop. agina ervix terus allopian ube vum vum vulation vary allopian ube perm ertilization allopian ube perm vum tilized ygote terus ining

Congratulations! Your Pregnant Signs and Symptoms of Pregnancy Headaches Sensitive to smells Frequent urination Tender, tingling, swollen breast Spotting Fatigue Enlarging uterus and abdomen Food cravings Period stops Morning sickness Glowing Irritability Putting on weight Mood swings Acne Dizzy

Pre-Natal Development Growth of the baby from conception to birth. 40 weeks, 10 months, 280 days, 3 trimesters In this time, it will go from one cell the size of a pencil dot to a 7 ½ pound 200 billion cell baby. 4 weeks = poppy seed, 5 weeks = grain of rice, 7 weeks = blueberry, 14 weeks = apple, 15 weeks = orange, 39 weeks = watermelon If this rapid rate of growth continued past birth, the baby would weigh 160 lbs by its first birthday.

Section B #2 3 Trimesters (about 13 weeks each) 1st Trimester focus is on physical development The greatest time of risk and vulnerability for birth defects to the developing fetus. 2nd Trimester Increased organ development Define Quickening and Lanugo Physically the easiest on the Mom. 3rd Trimester Continues to grow and practice using body and bodily functions Define Vernix and Lightening Physically the most demanding on Mom

Prenatal Development Definitions   Lanugo Fine white hair that covers the fetus’ body to keep it warm and to help the vernix stick to the body. Vernix A white, waxy coating covering the fetus’ body to protect it from the elements of the womb. Quickening Feeling the baby move for the first time. This usually occurs around the 5th month. Lightening When the baby drops down into the pelvis region in preparation for delivery.

Prenatal Terms Embryo weeks 3-8 of pregnancy Zygote weeks 0-2 *Fertilized ovum Fetus weeks 9-40 of pregnancy

Pre-natal Development “House” Uterus / Womb The fetus grows inside this.

Placenta (Latin for Cake) Flat pancake shaped organ with amniotic sac attached to one side and the umbilical cord attached to the other. filters nutrients and oxygen to the fetus. At 4 months completely developed By birth it is 1” thick, 8” diameter, 1lb If the woman is undernourished during her pregnancy, the placenta does not transfer essential nutrients to the fetus.

Umbilical Cord 20” long and reaches from fetus’ stomach to the placenta. Carries away waste from the baby and returns the waste products back to the mother. Brings oxygen, food, and nutrient rich blood to the embryo to keep it alive. ▪ Thick garden-like hose that will not knot due to Whartons’ Jelly substance.

Amniotic Sac and Amniotic Fluid Sac contains embryo and amniotic fluid A clear and transparent membrane that is very strong until broken 4 cups of amniotic fluid at birth that is replenished 9 times a day. The fluid protects baby from bumps, bruises, and jolts Prevents shock to the fetus, keeps a constant temperature, and keeps the fetus from adhering to the uterine wall.

Uterus / womb Amniotic fluid placenta Amniotic sac cervix Amniotic cord vagina