11:709:493 Lecture Notes - Lecture 5: Epiphyseal Plate, Umbilical Cord, Immune System
30 Apr 2020
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Document Summary
Stages of intrauterine growth: ovum: fertilization to embryonic plate, embryonic: formation of tissue, organs and orang systems, fetal: rapid growth in mass. Factors that influence fetal growth: genetics, nutrition, placental function, maternal influences, hormonal. Infancy: birth through 1 year: rate of growth is most rapid during the first 6 months. Preschool: 2 to 6 years: steady weight gain during this time, about 2 kg per year, 3-4-year olds are classified as toddlers . Adolescence: 11 to 18 years: another period of rapid growth, onset and duration of puberty varies. Growth: not a uniform process; different from development (an increase in skill: cellular growth, tissue turnover, growth of bone, bone mass continues to develop until the age of 25, factors affecting growth, genetic, neural, hormonal, nutritional, miscellaneous. Year 2: deceleration in rate of growth during year 2, about 2. 5 kg weight gain (~5. 5 lbs, 12 cm increase in length, 2 cm increase in head circumference (much less than 1st year)
