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  2. Bone age - Wikipedia

    en.wikipedia.org/wiki/Bone_age

    Peak height velocity (PHV) occurs at the average age of 11 years for girls and at the average age of 13 years for boys. [29] While there is no exact age for the culmination of bone maturity, modern research suggests a range of between 15-17 years for bone maturity in boys and 14-16 years for girls.

  3. Early childhood development - Wikipedia

    en.wikipedia.org/wiki/Early_Childhood_Development

    Early childhood development is the period of rapid physical, psychological and social growth and change that begins before birth and extends into early childhood. [1] While early childhood is not well defined, one source asserts that the early years begin in utero and last until 3 years of age. [1]

  4. Ossification - Wikipedia

    en.wikipedia.org/wiki/Ossification

    five years to 12 years in females, 5 to 14 years in males Ossification is spreading rapidly from the ossification centers and various bones are becoming ossified. 17 to 20 years Bone of upper limbs and scapulae becoming completely ossified 18 to 23 years Bone of the lower limbs and os coxae become completely ossified 23 to 26 years

  5. Development of the human body - Wikipedia

    en.wikipedia.org/wiki/Development_of_the_human_body

    Development before birth, or prenatal development (from Latin natalis 'relating to birth') is the process in which a zygote, and later an embryo, and then a fetus develops during gestation. Prenatal development starts with fertilization and the formation of the zygote , the first stage in embryonic development which continues in fetal ...

  6. Synaptic pruning - Wikipedia

    en.wikipedia.org/wiki/Synaptic_pruning

    Pruning starts near the time of birth and continues into the late-20s. [2] During the pruning of a synapse, both the axon and the dendrite decay and die off. Synaptic pruning was traditionally considered to be complete by the time of sexual maturation , but MRI studies have discounted this idea.

  7. Puberty - Wikipedia

    en.wikipedia.org/wiki/Puberty

    Puberty is the process of physical changes through which a child's body matures into an adult body capable of sexual reproduction.It is initiated by hormonal signals from the brain to the gonads: the ovaries in a female, the testicles in a male.

  8. Brothers locked in apartment for 14 years tell their story - AOL

    www.aol.com/entertainment/brothers-locked...

    After becoming the subject of an award-winning documentary, they're finally speaking out. "He would say to Brothers locked in apartment for 14 years tell their story

  9. Child development stages - Wikipedia

    en.wikipedia.org/wiki/Child_development_stages

    Newborns typically lose 7–10% of their birth weight in the first few days, but they usually regain it within two weeks. [17] During the first month, infants grow about 1 to 1.5 inches (2.5 to 3.8 cm) and gain weight at a rate of about 1 ounce (28 g) per day. [17] Resting heart rate is generally between 70 and 190 beats per minute. [18]