Science 7th Grade - Chapter 18

Created by hoffsue 

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15 terms

testes

the primary male reproductive organs, which produce sperm and testosterone

penis

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

ovaries

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

uterus

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

vagina

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

embryo

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

placenta

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

fetus

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

cancer

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

infertility

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

infancy

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

childhood

-lasts from age 2 - puberty

adolescence

-lasts from puberty to the beginning of adulthood

pregnancy

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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