Studied by 51 people
The egg is the _______ cell in the body
largest
How long can the “loser” sperm live?
1 week
Who determines the sex of the baby?
Father
Which chromosome is in charge of determining the sex of the baby?
the 23rd chromosome
When is much of a baby’s future predetermined?
at the instant of fertilization
About how long after fertilization does the egg divide?
1 day
What will the outer cells of the egg become?
the placenta
During pregnancy, a woman’s blood volume increases up to how much?
50%
Which organ is one of the first to form?
the heart
How big is the embryo after 4 weeks?
no bigger than a kidney bean
We share 98.7% of our DNA with what species?
Chimpanzee’s
At birth, the baby’s head will be ________ of his body length
a quarter
If the family history has twins are you less likely to have twins yourself?
no, it has no effect.
do all twins have separate placentas
no
after 12 weeks what trimester are you in the beginning of
the 2nd trimester
what percent of pregnancies end in a miscarriage
50%
miscarriage is common in what months of pregnancy
the first 3 months
what does the amniotic fluid contain from the mom’s food
tastes and smells
how does the baby develop the blinking reflex
through opening and closing its eyes
what color eyes do african/asian babies usually have
dark brown or dark gray
what color eyes are caucasian babies born with
blue eyes
what are the first sounds a baby hears
the rumbling of the mothers stomach
what will happen to the weight and height of the baby in the 3rd trimester
weight will triple and height will double
what major organ is one of the last to form
lungs
does the fetus have REM (rapid eye movement) sleep
yes
Note 
Flashcard (53)