1st Trimester
How many stages does the 1st trimester have?
It has 3 stages: The Germinal Stage, The Embryonic Stage, and The Fetal Stage.
What month is this? Developing the sucking and swallowing reflexes; often caught sucking their thumb on ultrasounds.
Month 4
The eyes can now blink and see light filtering through the uterine wall; taste buds are also fully developed.
Month 7
How many chromosome do we have?
46
The developing baby is connected to the mother by this. This carries nutrients, and oxygen to the developing baby.
What do you call a fertile egg?
The Zygote
I gain fingerprints during this month.
Month 4
The fine body hair (lanugo) begins to fall off, while real hair on the head continues to grow.
Month 8
This single-celled entity, formed at conception, divides rapidly as it travels down the fallopian tube.
Zygote
This tissue, shaped some what like a pancake, is attached to the uterine wall and contains a rich network of blood vessels.
Placenta
Where should the zygote implant itself?
The uterine wall
This month is a milestone called the "quickening".
Month 5
Most babies move into the head-down position, getting ready to enter the world the right way.
Month 9
Striking early, this vital circulatory organ begins beating just three weeks after conception.
The Heart
There is a protective sac that is filled with this liquid. It helps cushions the developing baby from outside pressures. What is this?
Amniotic Fuild
Two Part Question: What is the ectoderm and what does it become?
It is the outer layer of cells. It becomes the skin, hair, and nails. It also forms the nervous system, including the brain, spinal cord, and nerves.
Hearing develops rapidly; the fetus can hear the mother’s heartbeat and voice.
Month 5
The lungs produce surfactant, a substance that helps them expand and take that first breath of air.
Month 9
is it when the fetus begins to develop the ability to hear sounds from outside the womb?
2nd Trimester
What is the term for the point in development at which a fetus has a chance of surviving outside the womb.
Viability
Two Part Question: What is the endoderm and what does it become?
It is the internal cell layer, eventually becomes the other internal organs, such as the stomach, liver and lungs.
This month is called the "age of viability"
Month 6
Brain development peaks with billions of new connections, and the skeleton is fully formed but remains soft and flexible for delivery.
Month 8
Amniotic fluid changes flavor based on the mother’s diet, allowing the fetus to develop these two senses before birth.
Taste and Smell
Soft, downy, unpigmented body hair that grows on a fetus during the second trimester. It anchors a waxy, protective coating called vernix caseosa to the skin, shielding the fetus from constant exposure to amniotic fluid.
Lanugo (lə-NOO-goh)