Beckman Embryo/anatomy Flashcards
ovaries, fallopian tubes, uterus, and upper vagina are derived from:
intermediate mesoderm
Effects of uncontrolled diabetes during organogenesis
Increased growth
Polyuria
Placentomegaly
Polyhydramnios
*Spine and heart = most common sites affected
Hypothyroid increases risk for
miscarriage
risks after twin-twin transfusion
Surviving infants have increased rates of neurological morbidity, esp cerebral palsy
Withered, meconium stained, long-nailed, fragile and ass. with small placenta
Fetal dysmaturity (10% risk when gestational age exceeds 43 weeks)
Progesterone level of _____ suggests abnormal or extrauterine pregnancy
<5
Appropriate management for abnormal intrauterine pregnancy (presence of yolk sac but low progesterone and hcg)
Expectant management is first, other options = misoprostol, manual vacuum aspiration, or D and C.
(laparoscopy and methotrexate not indicated)
Why does milk production increase after pregnancy?
Inhibitory actions of estrogen and progesterone are lifted
managementto prevent meconium aspiration syndrome:
Its present in up to 20%. If infant is depressed, intubate and suction from beneath glottis. But if strong resp efforts (“vigorous”), tracheal suction not necessary
Growth restricted pregnancy
freq due to oligohydramnios. chronic hypoxia diverts blood flow from kidney to organs that are more critical during fetal life. do NST and amniotic fluid volume
intermediate mesoderm froms ______ _____ in the 4th week of dev
urogenital ridges
Wnt4 = ____ _____ gene
ovary determining
Gonads become structurally male or female by ___ week; external genitalia by the ____ week
7th
12th
CAH = ambiguous genitalia in female due to decrease of ____ leading to increase of ____
cortisol; androgens (compensatory increase)
mesonephric (wolffian) ducts form
epididymis, ductus defers, and ejaculatory ducts in males. gone in females