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Human Development Stages

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Human Development Stages

Human Development Stages

Essential for Biology and Human Sexuality Lessons. Various stages of fetal development are featured in one beautifully detailed set of eight life-size models, each a re-creation of the uterus with a fetus. Five of the models shows a fetus at different times during the gestation period: models 1-3 each correspond to the first three months of pregnancy, model 4 depicts the fetus in the fourth to the fifth month, and model 8 presents a seven month- old fetus. Model 5 shows the fetus in a breech position, model 6 shows the fetus on its back, and model 7 depicts twin five-month-old fetuses in the uterus. In addition, models 4-8 features for a closer examination of the anatomical features that have developed. The one, two, and three piece models are mounted on individual standswith numbered Key Card.

SKU: 14069 Categories: ,

Description

Human development occurs in distinct stages, from conception to old age. Below is an overview of the major human development stages:

1. Prenatal Stage (Conception to Birth)

  • Zygote (0-2 weeks): A fertilized egg undergoes cell division and implantation.
  • Embryonic Stage (3-8 weeks): Formation of major organs and body structures.
  • Fetal Stage (9 weeks-birth): Rapid growth and maturation of organs.

2. Infancy (Birth to 2 Years)

  • Reflexes such as sucking and grasping develop.
  • Rapid brain growth, motor skills (crawling, walking), and sensory development.
  • Emotional bonding and early social interactions begin.

3. Early Childhood (2-6 Years)

  • Development of language, coordination, and fine motor skills.
  • Social skills and imagination expand.
  • Basic independence in daily tasks like dressing and feeding.

4. Middle Childhood (6-12 Years)

  • Logical thinking and problem-solving abilities develop.
  • Academic learning and peer relationships become important.
  • Physical growth continues steadily.

5. Adolescence (12-18 Years)

  • Puberty occurs, leading to hormonal and physical changes.
  • Identity formation, emotional independence, and cognitive maturity.
  • Social interactions and peer influence play a significant role.

6. Early Adulthood (18-40 Years)

  • Establishment of career, relationships, and independence.
  • Physical peak in terms of strength and energy.
  • Family and social responsibilities grow.

7. Middle Adulthood (40-65 Years)

  • Gradual physical decline (metabolism slows, wrinkles, gray hair).
  • Career and family stability, focus on legacy and accomplishments.
  • Mid-life transitions and possible reevaluation of life goals.

8. Late Adulthood (65+ Years)

  • Aging leads to reduced strength, sensory decline, and potential health issues.
  • Reflection on life, wisdom, and emotional stability increase.
  • Retirement and lifestyle adjustments.

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