T. BUCK / CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY T. BUCK / CUSTOM MEDICAL STOCK PHOTO / SCIENCE PHOTO LIBRARY
Illustration showing the brain and muscles of a very young child. At birth the human brain is still developing, and most movements are reflexes. The nervous system develops, integrating information from the senses and the muscles and allowing more intentional movement and motor control. The baby can sit up unaided at around six months, and takes its first steps at around 12 months.
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