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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 |