FRHD 1010 Chapter Notes - Chapter 3: Briey, Prefrontal Cortex, Dendrite

• School: University of Guelph
• Department: Family Relations and Human Development
• Course: FRHD 1010
• Professor: Susan Chuang

Document Summary

Growth is so rapid and the consequences of neglect are so severe. Newborns lose a bit of weight the rst 3 days of life and then gain about 30g per day for several monthsbirth weight doubles by 4 months typically, and triples by a year. Two year olds are half their adult heigh and about a fth of their adult weight. Head-sparing: a biological mechanism that protects the brain when malnutrition disrupts body growth. The brain is the last part of the body to be damaged by malnutrition. Prefrontal cortex: the last part of the brain to develop anticipation, planning and impulse control. Neurons are linked by networks of nerve bres call axons and dendrites axons communicate with dendrites of another neuron by synapses. Dendrite growth is the major reason that brain weight triples from birth to age 2 years. ~5x increase in dendrites in the cortex in the 24 months after birth.