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Questions and Answers
What is the first stage of human development after fertilization?
What is the first stage of human development after fertilization?
What is the primary role of the placenta during pregnancy?
What is the primary role of the placenta during pregnancy?
At what age does the stage of infancy end?
At what age does the stage of infancy end?
Which of the following statements about human development stages is true?
Which of the following statements about human development stages is true?
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During infancy, which of the following behaviors is typical for a newborn?
During infancy, which of the following behaviors is typical for a newborn?
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Study Notes
Human Development Stages
- Humans have eight stages of development: fetus, infancy, toddler years, childhood, adolescence, teenage years, adulthood, middle age, and adult age.
- Humans are most closely related to apes but have more developed brains and body proportions.
Fetus
- Human life begins with fertilization, the union of a sperm cell and an egg cell.
- A fertilized egg is called a zygote.
- The zygote develops into an embryo, then a fetus.
- The fetus develops inside the mother's uterus for nine months, a period called pregnancy.
- The fetus's development relies on nutrients and oxygen from the mother.
- A temporary fetal organ called the placenta delivers these necessities.
Infancy
- Infancy is the first stage after birth, lasting from birth to one year of age.
- Infants require significant parental attention.
- They grow rapidly, and their brains develop quickly.
- Infants can perform basic functions like breathing and swallowing.
- Mothers often breastfeed their infants.
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Description
Explore the eight stages of human development from fetal stage to adulthood. Learn about the biological and physiological changes that occur during these critical phases of life. This quiz will test your understanding of human growth and development.
