1. A Topical Approach to LIFE-SPAN DEVELOPMENT John W. Santrock Chapter Three: Physical Development and Biological Aging

3. Fig. 3.1 Changes in Proportions of the Human Body During Growth

4. Height and Weight in Infancy and Childhood Infancy Average 20 inches, 7 ½ lbs at birth Triple weight by 1 year ½ adult height, 20% adult weight by age 2 Early Childhood Growth slows, patterns vary individually Girls slightly smaller and lighter Girls gain fat, boys gain muscle Middle and Late Childhood Slower, consistent growth Muscle mass and strength increase Boys stronger, body proportions change

13. Fig. 3.4 Lung Capacity, Smoking and Age

16. Fig. 3.6 The Brain’s Four Lobes

17. Functions of Lobes of the Cortex Frontal Involved in voluntary movement, thinking, personality, and intentionality or purpose Occipital Function in vision Parietal Active role in hearing, language processing, and memory Temporal Roles in registering spatial location, attention, and motor control

19. The Neuron Fig. 3.7

22. Dendritic Spreading Fig. 3.12

24. Fig. 3.13 Synaptic Density in Human Brain from Infancy to Adulthood

26. Growth Curves for Head and Brain and for Height and Weight Fig. 3.14

34. Sleep Across the Human Life Span Fig. 3.19

44. Fig. 3.22 Risks of Dying from Cancer in Okinawa, Japan, and the United States

46. Biological Theories of Aging Cellular Clock Theory Maximum times that human cells can divide is about 75 to 80 Free-Radical Theory People age due to cells’ metabolism produces unstable oxygen molecules (free radicals) Mitochondrial Theory Aging caused by decay of mitochondria; oxidative damage Hormonal Stress Theory Aging in body’s hormonal system can lower resistance to stress and increase risks of disease

47. The End