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lifespan ch 2 quiz
what are gametes | reproductive cells, and each gamete consists of 23 chromosomes |
what is a zygote | 2 gametes combine and produce a new individual |
when does prenatal development begin | at conception |
what is a full term pregnancy | 266 days, 38 weeks, 9 months |
what is the average period cycle | 28 day cycle |
when are you not pregnant | weeks 1 and 2 |
what is the 1st stage of prenatal development | germinal stage (1st 2 weeks) |
which stage is after the germinal stage | embryonic |
how long is the embryonic stage | 3-8 weeks |
when does the nervous system start to form | 3 weeks |
what happens at 4 weeks | there is a primitive heart |
what is the final stage of prenatal development | fetal stage |
how long is the fetal stage | 9 weeks - birth |
when do you get finger and toes | 12 weeks, end of the 1st trimester |
when does the heartbeat become stronger | around 8 weeks |
when can you see sexual differentiation | begins at 9 weeks |
when does the brain size increase 6 times | fetal period |
what is the avg size newborn | 7.5lbs |
what is teratology | the study of birth defects |
teratogens | when a child is missing a limb |
what impacts teratogens | smoking, drugs, alcohol |
what are behavioral teratogens | autism, ADHD, any impact on the cognitive |
what prenatal test is done at 10 weeks | cvs |
at 16 weeks which prenatal test is performed | amniocentesis |
which tests are done with high risk | cvs, amniocentesis |
main birthing options | hospitals, birthing centers, home |
what happens in stage 1 of active labor | dilation & effacement |
what stage does pushing and birth happen | stage 2 |
what happens during stage 3 | delivery of placenta |
most common medical innervations | fetal monitorings |
types of medications for medical interventions | epideral, analgesics, pitocin |
what is pitocin | synthetic version of what starts labor/contractions |
what score do you want on the APGAR scale | 7 |
when does the test for the APGAR scale occur | 5 mins post birth |
when does brazelton neonatal behavioral assessment scale need to be done | before 4 weeks |
what does the NBAs record | 46 behaviors |
how many reflexes does NBAs assess | 20 reflexes |