Before the Bell, Open your books to 201 and have out a sheet of paper and a pen! On the sheet of paper, copy what I have written down on the white board Chapter 9 lesson 2

Conception and Pregnancy What we’re going to learn in this lesson – The series of events that lead to pregnancy – The development of the embryo and fetus – The physical and emotional changes that parents to be undergo – The components of good prenatal care – Some responsibilities of parenthood

Why? You may not think so now… Even if you’re right, at some point you’ll know someone who does

Fertilization Reading

Fertilization AKA Conception – Union of an egg and sperm Up to half a billion sperm is released, a couple hundred make the swim, and only 1 fertilized the egg READING AGAIN

The Zygote United egg and sperm is called a zygote – Within 36 hours, the zygote begins to divide! TIMELINE – READING AGAIN

Implantation Within 4-5 days after fertilization, the zygote reaches the uterus (500 cells) – Timeline Made a change into a hollow sphere called a BLASTOCYST. When the blastocyst attaches itself to the uterine wall (IMPLANTATION) it becomes an EMBRYO. – READING

Pregnancy Testing I think I might be pregnant… – Missed period? (higher levels of progesterone) – Can be implantation – HCG TIMELINE Heads up- – there can be false negative pregnancy tests if taken too early, but false positives are super duper rare. – Reading

The Embryo Placenta- How the baby is held to the uterus Umbilical cord- 25 days after fertilization – AKA the lifeline – Timeline – The placenta is a filter… for everything (CO2, alcohol, drugs) Amniotic sac- Thin membrane that holds AMNIOTIC FLUID which works as a buffer Fetus- feet, hands, eyes (all at the end of the second month) timeline – READING

The Fetus Between the 3 rd and 6 th month, he or she will grow to be almost a foot long and weight 1.5 lbs. – Hair! Wrinkles? Already? Baby soccer player – Can hear sounds and see light TIMELINE Six to 9 months – Eyes open/close, gains weight, less wrinkles – Aprox 20 inches, 7.5 lbs TIMELINE – Read

Trimesters 1 st trimester – Morning sickness – The initial weight gain – Soreness – Bathroom frequently 2 nd trimester – Abdomen grows – Fetus starts moving – Heartburn/indigestion – Pre-milk 3 rd trimester – Gain of 25 to 35 lbs Has been up to 60 before – Baby is on a work out regiment, stretching its muscles frequently – Irregular contractions Uterus gearing up – Baby flips (usually) so the lower abdominals are hard READING

Emotional Changes Happiness and Worry Sympathetic pregnancy – The dad/partner feels some of the discomfort like morning sickness and frequent urination

PRENATAL CARE What to DO – Well balanced diet – Exercise (even when you don’t want to) – Prenatal vitamins – Regular dr visits What not to do – Drink (FAS) – Smoke – Be promiscuous – Take good care of yourself! Tests that can be had – Amniocentesis Takes some amniotic fluid to test for over 70 genetic disorders! – Chorionic villus sampling Chorion (small piece of the placenta) – Ultrasound Takes pictures of the developing fetus – Determines sex, abnormalities, age

White boards! What are some of the things that happen before the female is considered pregnant?

What are some of the stages that the embryo and fetus go through? – What physical changes?

Tell me 2 physical or emotional changes a couple undergoes.

What are some important prenatal care things to do while pregnant? Name 3

What are some of the responsibilities people have as new parents?