DEP-3103 Chapter Notes - Chapter 5: Ejaculation, Scrotum, Bulimia Nervosa
Document Summary
20% of a humans life is dedicated to growing. Distance curve- plots the average size of a sample of children at each age, indicating typical yearly progress toward maturity. Velocity curve- plots the average amount of growth at each yearly interval, revealing the exact timing of growth spurts. During puberty, the hands, legs, and feet accelerate first followed by the torso. Body fat increases after birth, reaching its peak at 9 months. During puberty, boys rbc"s increase along with their muscles. Skeletal age- measure of development of the bones of the body. Epiphyses- special growth centers at the 2 extreme ends of each of the long bones of the body. Cartilage produced at growth plate here and continues to grow through childhood, but eventually thins and disappears. Dynamic systems of action- when motor skills work as a system, separate abilities blend together, each cooperating with others to produce more effective ways of exploring and controlling the environment.
