Female Repro - First Aid Flashcards
An organ that is absent due to absent primordial tissue
Agenesis
An organ that is absent despite presence of primordial tissue
Aplasia
Extrinsic fetal disruption after embryonic period
Deformation
Incomplete organ development with present primordial tissue
Hypoplasia
Intrinsic embryonic disruption
Malformation
Drug that causes fetal renal damage
ACE inhibitors
Drug that causes fetal ototoxicity
Aminoglycosides
Drug that causes vaginal clear cell adenocarcinoma and adenosis in fetus
Diethylstilbestrol (DES)
Drug that causes microcephaly, dysmorphic craniofacial features, hypoplastic fingers, cardiac defects, IUGR and mental retardation in fetus
Phenytoin
Drug that causes discolored teeth in fetus
Tetracycline
Drug that causes limb defects
Thalidomide
Drug that causes neural tube defects
Valproic acid (inhibits folate absorption)
Drug that causes fetal bone deformities, fetal hemorrhage, spontaneous abortion and eye abnormalities.
Warfarin
Drug that causes Ebstein’s anomaly
Lithium
Drug that causes neural tube defects, craniofacial defects, fingernail hypoplasia, developmental delay and IUGR
Carbamazepine
Leading cause of birth defects and mental retardation in US. Can also cause microcephaly, holoprosencephaly, facial abnormalities, limb discoloration and heart -> lung fistulas
Fetal Alcohol Syndrome
Drug that causes fetal addiction, abnormal development and placental abruption
Cocaine
Drug that causes preterm labor, placental problems, IUGR and ADHD
Smoking
Cause of congenital goiter or cretinism
Iodine (excess and deficiency = goiter and cretinism respectfully)
Cause of anal atresia, congenital heart defects and neural tube defects
Maternal diabetes
Extremely high risk for spontaneous abortion, can also cause cleft palate and cardiac abnormalities
Isotretinoin (Vitamin A excess)
Physical exposure that can cause microcephaly and mental retardation
X-ray
Identical twins
Monozygotic, same sperm same egg
Fraternal twins
Dizygotic, two sperms and two eggs, diamniotic and dichorionic
Cells that secrete hCG
Syncytiotrophoblasts: hCG stimulates corpus luteum to secrete progesterone during the 1st trimester
Where does nutrient exchange occur between the mother and the fetus?
Decidua basalis. This is where maternal blood enters from the spiral arteries into the intervillous spaces and bathes chorionic villi in maternal blood.
How does maternal blood get to the fetal heart?
Umbilical vein -> Ductus venosus -> IVC
What degenerates and what develops in development of a female fetus?
Mesonephric duct (Wolffian) degenerates. Paramesonephric duct (Mullerian) develops.
What develops from the urogenital sinus in a female?
Lower vagina
What develops from the paramesonephric (Mullerian) duct in the female?
Upper vagina, uterus, fallopian tubes
What happens when the two paramesonephric ducts fail to fuse completely?
Bicornuate uterus
Lymphatic drainage from vulva and distal 1/3 of vagina? Proximal 2/3 of vagina and uterus? Ovaries?
Distal vagina and vulva: Superficial inguinal nodes. Proximal vagina and uterus: External iliac, obturator and hypogastric nodes. Ovary: Para-aortic nodes.
What ligament contains the ovarian blood vessels? When is the ureter at risk around this ligament?
Infundibulopelvic (suspensory) ligament: suspends the ovary to the pelvic wall. Ureter at risk when ligating ovarian vessels in oophorectomy.
What ligament contains the uterine blood vessels? When is the ureter at risk around this ligament?
Cardinal ligament: connects cervix to side wall of pelvis. Ureter at risk when ligating uterine vessels for hysterectomy.
What ligament contains the artery of Sampson?
Round ligament: connects uterine fundus to labia majora via the inguinal canal
What ligament is made of up the mesosalpinx, mesometrium and mesovarium?
Broad ligament: connects the uterus, fallopian tubes and ovaries to the side pelvic wall.
What ligament connects the medial pole of the ovary to the lateral uterus?
Ligament of the ovary
Female sources of estrogen? Where does the most potent estrogen come from?
1) 17-beta Estradiol (most potent) from ovary. 2) Estrone from adipose 3) Estriol from placenta (least potent)
Where does estrogen find its receptors?
Cytoplasm. Once estrogen binds, they move as a dimer to the nucleus.
Pubertal effects of estrogen
Breast development and change in fat distribution
Menstrual effects of estrogen
Follicle growth, endometrial proliferation, increased excitability of myometrium
Central effects of estrogen
Feedback inhibition of FSH and LH. Growing profile triggers LH surge. Stimulates PRL secretion, but blocks action on breast.
Hepatic effects of estrogen
Increased SHBG, HDL and decreased LDL
How is estrogen production stimulated in the ovary by the CNS?
Pulsatile GnRH -> FSH/LH secretion -> Activation of desmolase and aromatase -> Conversion of cholesterol to androstenedione by theca cells (desmolase) and conversion to estrogen by granulosa cells (aromatase)
Female sources of progesterone?
Corpus luteum, placenta, adrenal cortex
Menstrual effects of progesterone
Spiral artery development, endometrial gland secretion, decreased myometrial excitability and thickens cervical mucous
Pregnancy effects of progesterone
Maintenance of pregnancy, inhibition of gonadotropins LH/FSH
Tanner stages of sexual development
1) Child 2) Pubarche & Thelarche 3) Pubic hairs darkens/curls, penis/breasts grow 4) Areolae raise, penis widens, darkens and glans develops 5) Adult
Which menstrual phase is more often the one that varies in length?
Follicular phase. The luteal phase is usually a constant 14 days, ending in menstruation.
When is follicular growth most rapid in the menstrual cycle?
2nd week of the proliferative phase
What defines oligomenorrhea
> 35 day cycle
What defines metorrhagia
Frequent, irregular menstruation
What defines menorrhagia
> 80 mL blood loss or > 7 day long menses
What defines menometrorrhagia
Heavy, irregular menstruation at irregular intervals
What defines polymenorrhea
< 21 day cycles
How do hormones change with each of the events shown below?
FSH causes follicles to mature and estrogen rises w/follicle maturation. High estrogen profile increases anterior pituitary GnRH receptors and triggers LH release which triggers ovulation and formation of corpus luteum which secretes progesterone. As the corpus luteum regresses, progesterone levels fall, the decidua functionalis sloughs off and menstruation begins.
What phases does the egg arrest in during oogenesis?
Primary oocytes begin meiosis I during fetal life, arrest in prophase I, and complete meiosis I just prior to ovulation. Secondary oocytes begin meiosis II, arrest in metaphase II and complete meiosis II once fertilized. If not fertilized within 1 day the secondary oocyte degenerates.
How many polar bodies are formed during oogenesis?
- On completion of meiosis I the primary oocyte splits into the secondary oocyte and a polar body. On completion of meiosis II, the secondary oocyte splits to form another polar body and the ovum. The other polar body also splits to form 2 polar bodies, for an end total of 3
When in the menstrual cycle will basal body temperature increase?
When progesterone is secreted by the corpus luteum
What is the transient mid-cycle ovulatory pain called than can mimic appendicitis?
Mittelschmerz. This is due to follicular swelling, rupture and fallopian tube contraction.
What is the timeline from ovulation to fertilization to implantation? When will a woman finally test positive for pregnancy?
Fertilization: 1 day after ovulation. Implantation: 6 days after fertilization. Once syncytiotrophoblasts are established, they secrete hCG, which can be detected on a blood test within 7 days after fertilization or on a home test 2 weeks after conception.
What are the factors that stimulate the breast to begin producing milk once the baby is born?
Delivery of the placenta decreases progesterone and estrogen levels. This disinhibits lactation. Nipple stimulation increases oxytocin and prolactin which assists in milk letdown and milk production respectively.
Immune factors found in breastmilk
Mostly IgA immunoglobulins, macrophages and lymphocytes.
What supplementation do infants who are fed only breastmilk require?
Vitamin D