PSYC325 Study Guide - Midterm Guide: Sex Organ, Prenatal Development, Menarche

• School: University of Delaware
• Department: Psychology
• Course: PSYC325
• Professor: Ball Shellene

Document Summary

Describing growth: probably the most obvious way to measure physical growth is height and weight. Between birth and 2 years, average height increases about 19 to 32 inches; weight increases from 7 to 22 lbs. Growth is very rapid during the irst year of child, when average baby gains 10 inches and 15 pounds. Growth is steady through preschool and elementary years; about 3 inches and 7 to 8 lbs. Muscle, bones and fat: most of the body"s muscle ibers fuse together. Layer of fat appears ii. under the skin near the end of the fetal period of prenatal development. Bone begins to form during prenatal development, staring as carilage, a sot, lexible issue. During embryonic period, the center of the issue turns to bone. Then, shortly before birth, the ends of the carilage structures, known as epiphyses, turn to bone. Variaions on the average proile: adults and children are taller and heavier than previous iii. generaions.