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  2. Timeline of human prenatal development - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_human_prenatal...

    Tooth buds, which will form the baby teeth, appear. The limbs are long and thin. The fetus can make a fist with its fingers. Genitals appear well differentiated. Red blood cells are produced in the liver. Heartbeat can be detected by ultrasound. [7]

  3. Child development stages - Wikipedia

    en.wikipedia.org/wiki/Child_development_stages

    Hearing acuity can be assessed by child's correct usage of sounds and language, and also by the child's appropriate responses to questions and instructions. Motor development. Walks a straight line (tape or chalk line on the floor). Hops on one foot. Pedals and steers a wheeled toy with confidence; turns corners, avoids obstacles and oncoming ...

  4. Prenatal development - Wikipedia

    en.wikipedia.org/wiki/Prenatal_development

    The growth rate of an embryo and infant can be reflected as the weight per gestational age, and is often given as the weight put in relation to what would be expected by the gestational age. A baby born within the normal range of weight for that gestational age is known as appropriate for gestational age (AGA).

  5. Development of the human body - Wikipedia

    en.wikipedia.org/wiki/Development_of_the_human_body

    Linear growth is a complex process regulated by the growth hormone (GH) – insulin-like growth factor-1 axis, the thyroxine/triiodothyronine axis, androgens, estrogens, vitamin D, glucocorticoids and possibly leptin. [25] GH is secreted by the anterior pituitary gland in response to hypothalamic, pituitary and circulating factors.

  6. Human embryonic development - Wikipedia

    en.wikipedia.org/wiki/Human_embryonic_development

    In biological terms, the development of the human body entails growth from a one-celled zygote to an adult human being. Fertilization occurs when the sperm cell successfully enters and fuses with an egg cell (ovum). The genetic material of the sperm and egg then combine to form the single cell zygote and the germinal stage of development commences.

  7. Early childhood development - Wikipedia

    en.wikipedia.org/wiki/Early_Childhood_Development

    Early childhood is a stage of rapid growth, development and learning and each child makes progress at different speeds and rates. [13] It is essential to integrate physical training designed in accordance with the anatomical characteristics andage-related characteristics of a child's development, to ensure the normal physical development of ...

  8. Pregnancy - Wikipedia

    en.wikipedia.org/wiki/Pregnancy

    Timeline of pregnancy, including (from top to bottom): Trimesters, embryo/fetus development, gestational age in weeks and months, viability and maturity stages Estimation of due date Distribution of gestational age at childbirth among singleton live births, given both when gestational age is estimated by first trimester ultrasound and directly ...

  9. Child development - Wikipedia

    en.wikipedia.org/wiki/Child_development

    A child using fingers to make a small, circular hole in the sand, 1997. Child development involves the biological, psychological and emotional changes that occur in human beings between birth and the conclusion of adolescence. It is—particularly from birth to five years— a foundation for a prosperous and sustainable society. [1]

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