Life-span development chap 4 notes

I. Prenatal Development A. Germinal Period - Conception to 2 weeks 1. Creation of the zygote 2. Continued cell division 3. Implantation - attachment of the zygote to the uterine wall (10 days after conception) * Blastocyst - inner cells (embryo) * Trophoblast - outer layer (placenta/umbilical cord - life supports systems) B. Embryonic Period - 2 to 8 weeks after conception 1. Cell differentiation intensifies, support systems for cells form and organs appears 2. Attached zygote becomes embryo * Endoderm (digestive/respiratory systems) * Mesoderm (circulatory …

…infant states that assess heart rate, respiratory effort, muscle tone, body color, reflex irritability at one and five minutes after birth 2. The Brazelton Neonatal Assessment Scale - more detailed long-term neurological evaluation, given third day of life. Evaluates 20 reflexes and reaction to 27 different physical and social stimulants IV. Postpartum Period A. 4th trimester - approximately 6 weeks 1. Physical * fatigue * resume sexual relations * involution (uterus returns to normal size) * exercises * hormone adjustment 2. Psychological adjustments * bonding * post-partum depression.