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beginning of life
Definitions
Term | Definition |
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Fertilization | The joining together of a male sperm cell and a female egg cell. |
Egg Cell | The reproductive cell from the female that joins with a sperm cell to make a new life. |
Sperm Cell | The cell from the father that enters the egg cell during fertilization. |
Tissues | Groups of similar cells that perform a specific function. |
Organs | Body parts that perform particular functions. |
Uterus | A pear-shaped organ inside a females body where a fetus is nourished. |
Embryo | A developing organism from the time of fertilization to about the eighth week of development. |
Fetus | A developing organism from the end of the eighth week of a mothers pregnancy until birth. |
Placenta | A thick, rich tissue that lines the walls of the uterus during pregnancy and that nourishes the fetus. |
Cord | They are all mixed nerves, and they provide a two-way communication system between the spinal cord and parts of the arms, legs, neck and trunk of the body. |
Umbilical | A tube that connects the fetus and the mothers placenta. |