Humangrowth Flashcards
Occurs from 2-8 weeks after conception
Embryonic period
First 2 weeks after conception, zygote created
Germinal period
9 weeks after conception to birth
Fetal period
Blastocyst implanted into uterine wall(embryonic period)
First trimester
Site of exchange for nutrients and waste products
Placenta
Three blood vessels transporting oxygenated blood an waste products
Umbilical cord
Transparent membrane
Amniotic sac
Protects fetus and regulates temperature
Amniotic fluid
Critical period for organ development(mostly during 2nd and 3rd month
Organogenesis
Any substance that crosses umbilical cord and harms fetus
Teratogenic agents
Undersized, mental deficits, physical anomalies
Fetal alcohol syndrome
Excessive negative emotions elicit hormones that reduce maternal blood pressure and blood flow to fetus
Emotional status
Delivers too quickly
Precipitate
Lack of oxygen
Anoxia
Toxic substance in the blood (preeclampsia or eclampsia)
Toxemia
(rh+) antigens pass from the baby to the mother (Rh-) the mothers antibodies attack antigens and baby’s red blood cells
Rh factors
Lower part of fetus presents first
Breech presentation
Spontaneous abortion, pregnancy terminated before fetus develops
Miscarriage
Willful surgical or chemical termination of pregnancy
Abortion
- Rapid increase in growth, 5in and 5 oz.
* quickening- fetal movements(about 5 months
Second trimester
LaMaze-relaxation training Leboyer-born into warm bath Home birth- delivery at home Anesthesia-drugs to block pain Cesarean- surgical removal
Birthing method
Stage 1-contractions, amniotic sac ruptures & cervix dilates and thins
Stage 2- descends down birth canal, crowning & delivery
Stage 3- uterus relaxes, then contracts, & expulsion if placenta
Birth stages
Assess 5 vital functions: heart rate, respiration, muscle tone, reflex irritability, and color
Angst test
Surgical removal of the prepuce, foreskin of the penis
Circumcision
Mother experiences physical and psychological adjustment
Postpartum