Examlex
Counting your heart rate for ten seconds and then multiplying it by six is an accurate way to measure heart rate when exercising.
Prenatal Development
The process by which a baby develops inside the mother's womb or uterus, spanning from conception to birth.
Embryonic Stage
A critical phase in prenatal development that occurs from the end of the second week to the end of the eighth week after fertilization, during which the major organs and structures of the organism begin to develop.
Foetal Stage
The stage of human development inside the womb from the end of the embryonic stage to birth.
Placenta
A crucial organ in the uterus of pregnant females that provides oxygen and nutrients to the developing fetus while removing waste products, and also produces hormones to regulate pregnancy.
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