Share 6th grade: reproduction exam review
Save to Folder
_________ is the union of a female sex cell with a male sex cell.
Fertilization
Eggs and sperm contain ____ of the genetic information that is needed to create a new human.
half
Explain the FIRST step of fertilization.
One ovary releases an egg and it moves along the Fallopian tube.
In which stage of fertilization is the zygote formed?
The third (or when a sperm penetrates and fertilizes the egg)
After the zygote begins to divide quickly, it forms a(n) ________.
embryo
Explain the FIFTH stage of fertilization.
The embryo implants in the wall of the uterus and continues to grow and develop.
In the second stage of fertilization ______ travels to the Fallopian tube.
sperm
In which organ of the female reproductive system does fertilization take place?
the Fallopian tubes
What is the function of the placenta?
It stores oxygen and nutrients from the mother's blood for the baby
What is the function of the umbilical cord?
Connect the placenta to the baby OR transport oxygen and nutrients from mother to baby
What does the amniotic sac contain?
Amniotic fluid
What is the function of the amniotic fluid?
protect the fetus
The embryo is called ________ at the end of the first trimester.
a foetus
Describe TWO things that happen during the first trimester
the brain begins to develop, the heart beats and the organs begin to function (except the lungs), small buds appear (will become arms and legs)
Describe TWO things that happen during the second trimester.
The mother begins to feel the baby moving, the foetus can hear, suck its thumbs and fingers, and open/close its eyes
Describe TWO things that happen during the third trimester.
The foetus grows and gains weight, the organs mature, premature babies may be born
