10/24/2023 When a 2-month-old can reach out and grab a small toy, what part of the brain is at work? quizletRead Now![]() Working from the middle, cartilage turns to bone until finally the enlarging middle section reaches epiphyses, ending skeletal growth. Check the milestones your child has reached by the end of 2 months by completing a checklist with CDC’s free Milestone Tracker mobile app, for iOS and Android devices, using the Digital Online Checklist, or by printing the checklist 755 KB, 2 Pages, Print Only below. Now the structure is hard at each end and the middle. Shortly before birth, the ends of the cartilage structures (epiphyses) turn to bone. Embryonic period= middle of the tissue turns to bone. Starts as cartilage (soft, flexible tissue) and becomes bone. Bone starts forming during prenatal development. Almost at adult weight by age 6, but specific parts of brain continue to grow and develop into.o Up to age 2= kids at high risk for adult obesity (based on fam factors) tend not to differ in body mass from kids at low risk for adult obesity but increases in weight become more noticeable by age 4, with fat masses higher by age 6 in kids at high risk for adult obesity. Increase in fat during adolescence= more pronounced in girls. Happens gradually at first, then more rapidly during adolescence. early elementary school= acquire more fat again. Fat continues to accumulate fast during first year after birth, producing appearance of "baby fat." Preschool years= kids become leaner. A layer of fat first appears under skin near end of fetal period. ![]() Childhood= muscles become longer, and thicker as individual fibres fuse together- process accelerates during adolescence, esp boys. All body's muscle fibres= present at birth. ![]()
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