Science 7th Grade - Chapter 18

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15 terms


the primary male reproductive organs, which produce sperm and testosterone


the male organ that transfers sperm to a female and that carries urine out of the body


in the female reproductive system of animals, an organ that produces eggs


in female placental mammals, the hollow, muscular organ in which an embryo embeds itself and develops into a fetus


the female reproductive organ that connects the outside of the body to the uterus


in humans, a developing individual from fertilization through the 10th week of pregnancy


the partly fetal and partly maternal organ by which materials are exchanged between a fetus and the mother

umbical cord

the rope-like structure through which blood vessels pass and by which a developing mammal is connected to the placenta


a developing human from the end of the 10th week of pregnancy until birth


a tumor in which the cells begin dividing at an uncontrolled rate and can become invasive


-the inability to conceive a child
-sometimes STDs and cancer can cause this


-lasts from birth to Age 2
-Growth is very rapid at this stage


-lasts from age 2 - puberty


-lasts from puberty to the beginning of adulthood


in medical practice, the period of time between the
first day of a woman's last menstrual period and the
delivery of her baby (about 280 days, or 40 weeks)

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