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The Beginning of the Life Cycle

Across
A developing embryo in the uterus in called a _____.
Many mother’s feel weak and irregular muscle contractions for several weeks leading up to birth. These are called ______ Hicks contractions
The outside of the ovum undergoes a chemical change which only allows ___ sperm to fertilize it.
3rd layer develops into nervous system, sense _____ and mouth.
The union of an egg cell and a sperm cell combine is known as __________ or conception.
During the second stage of birth the baby ______ from the mother's body.
Fat is stored to _______ body temperature.
_______ is the final stage of pregnancy in which the uterus contracts and pushes the baby out of the mother’s body.
1st layer develops into the respiratory and _______ system.
Down
2nd layer develops into _______, bones, blood vessels and skin.
After implantation, the zygote is now known as an _______.
The placenta is still attached to the baby by the _______ cord.
Stage 1 of birth is ______".
The zygote cell begins to divide as it travels through the _________ tube.
Amniotic sac is a thin, fluid-filled membrane that surrounds and protects the developing embryo.
Umbilical cord is a _______ structure that connects the embryo and the mother’s placenta.
he placenta is a thick, blood-rich tissue that lines the walls of the uterus during pregnancy and ______ the embryo.
You’re entire body started as a single ________ cell.
There are ______ trimesters.
The time of conception to birth is generally 9 months or 40 _____.