Human Development Vocabulary

1. Meiosis Human’s production of sex cells Each contains 23 chromosomes

2. sperm Male sex cell

3. egg- Female sex cell

4. fertilization- Process where male & female sex cells join together

5. zygote- Result of fertilization & first cell of developing offspring (baby) This stage of development lasts approx 3 weeks

6. implantation- Process when zygote becomes implanted in lining of uterus of female mammals

7. uterus- Hollow, muscular pelvic organ where zygote begins developing

8. mitosis- Cell division Parent cells divide into daughter cells each with 46 chromosomes

9. embryo- Name given to developing baby between weeks 3 & 8 of pregnancy

10. fetus- Name given to developing baby after 8 weeks of gestation until birth

11. Full term- Fetus is fully developed & could survive outside of mom’s uterus 35-40 weeks gestation

12. gestation- Length of normal pregnancy

13. newborn- Stage of growth after birth until 1 month of age

14. infancy- Stage of growth from 1 month until 1 year of age

15. toddlerhood- Stage of growth of child from 1 year until about 3-4 years old

16. preschooler Development of child from 3-4 years until 5

17. Primary school age- Child’s development from 5-10

18. pre-adolescence- Begins at approximately age 10 & leads into puberty

19. puberty- Beginning of adolescence where a child’s body is changing into an adults & can reproduce Girls 10-12 Boys 12-14

20. adolescence- Beginning of puberty into adulthood

21. adulthood- End of puberty & end of physical growth

22. old-age- When human nears expected life span