Module 13 Flashcards
developmental psychology
examines psych, cognitive, and social development across lifespan
stage theories
developmental stages; modernly reflect human growth and how people act at certain times in their lives
stable traits
temperament, emotions, extroversion, responsibility, aspects of personality (identity)
changing traits
social attitudes, self-image, conscientiousness (hope for better future)
how many sperm are released in ejaculation
250
how many sperm make it to ovum
5-200
fertilization
sperm has to penetrate ovum’s membrane
germinal phase
conception - 2 weeks; cells multiply
zygote
fertilized egg; half survive beyond first 2 weeks
blastocyst
cell mass has hollow center; 4 days after fertilization
embryonic phase
3-8 weeks; organs begin to form and function; most vulnerable stage (bc of rapid growth)
implantation
zygote attaches to mother’s uterine wall; 10 days after conception
placenta
outer cells of embryo; transfers nutrients and oxygen from mother to embryo
amniotic sac
encloses embryo in protective fluid; “water broke”
differentiation
organs begin to develop and differ/separate according to function
teratogens
drugs/diseases that can affect baby’s health; can cause lower birth weights, birth defects, future behavior problems, and decreased intelligence
fetal alcoholic syndrome (FAS)
1/700 children; leaves epigenetic marks; can also be caused by stress; can cause earlier birth bc baby thinks threat is occurring and increased health problems
viability
capacity to thrive in outside world (increases in fetal stage)
fetal stage
9 weeks-birth (~38 weeks); continues organ development; increases overall body growth (x20) to approx 7 lb and 20 in
week 4
cardiovascular system is functioning; brain and spinal cord grow
week 6
arms and legs bud/develop
week 8
baby weights 1 g and 2.5 cm/1 in; all organs developed besides sex organs
6th month
viability increases
7th month (2 months prior to birth)
can respond to vibrating on stomach (noise)