ANT203Y1 Lecture Notes - Lecture 8: Hypertrophy, Epiphysis, Menarche
Document Summary
Lecture 8: the biology of modern homo sapiens. Accilmitization: change over the course of individual"s life (can be reversible) Developmental plasticity: not reversible, affect growth and development in a way that is fixed if stunted in childhood but get nutrient in adolescent, you can make up for that growth lost in initial childhood. Change in functional capacity (growth is diff than development) Hyperplasia: cells keep replicating in different tissues. Looking at rat brain: has fewer number of cells than humans primates have more neurons, they don"t go through hypertrophy. Secular: looking at patterns overtime (change in patterns in growth and develop over time) a lot of this has happened in last 100 years, or when a population shifts in lifestyle, becoming more westernized. Increase in stature due to increase in lifestyle. Maturation changes (menarche becomes earlier over last hundred years along with lifestyle change to western life)
