- Отрасли: Health care
- Number of terms: 8622
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The most common chromosomal abnormality, Down syndrome results when a fetus has an extra copy of chromosome number 21. It causes mild to severe mental retardation, as well as other physical problems such as heart defects.
Industry:Parenting
The male reproductive cells produced by the testicles. Sperm is deposited by the male into the female's vagina and fertilizes an egg to produce an embryo.
Industry:Parenting
The female reproductive organs that release eggs into the fallopian tubes, where they may be fertilized if sperm is present.
Industry:Parenting
The female genital passage that leads from the uterus to the opening between the labia.
Industry:Parenting
