HDFS 2950 Lecture Notes - Lecture 20: Synaptic Pruning, Nocturnal Enuresis, Stunted Growth
20 Sep 2016
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Document Summary
Physical growth continues at a slow, regular pace. Girls are slightly shorter and lighter than boys until about age 9, when this trend reverses. After age 8, girls accumulate fat at a faster rate. The shortest children are found in south america, asia, pacific islands, and parts of. The tallest children are found in australia, northern and central europe, canada, and the united states. Environment: availability or scarcity of food; control of infectious diseases. In industrialized nations, a secular gain in height and weight: Gain is largely due to improved health and nutrition. Gains in height have stabilized, but weight gain continues. Ligaments are not yet firmly attached to bones, resulting in unusual flexibility. By age 12, all primary teeth have been replaced by permanent teeth. Malocclusion occurs in one-third of school age children. White matter rises steadily, especially in prefrontal cortex, parietal lobes, and corpus callosum.
