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Abstract
Children’s experiences in their earliest years affect how their brains work, the way they respond to stress, and their ability to form trusting relationships. During these years the brain undergoes its most dramatic growth, setting the stage for social and emotional development. Language blossoms, basic motor abilities form, thinking becomes more complex, and children begin to understand their own feelings and those of others.Development of the human body is the process of growth to maturity. The process begins with fertilization, where an egg released from the ovary of a female is penetrated by a sperm cell from a male. The resulting zygote develops through mitosis and cell differentiation, and the resulting embryo then implants in the uterus, where the embryo continues development through a fetal stage until birth. Further growth and development continues after birth, and includes both physical and psychological development, influenced by genetic, hormonal, environmental and other factors. This continues throughout life: through childhood and adolescence into adulthood.