Final Review: Pregnancy and Lactation Flashcards
Who is a dick?
Martha
What activates the ciliated epithelium of fimbriae to beat toward the ostium?
Estrogen
Where does fertilization take place?
Ampulla
What two hormones aid sperm transport by contractions of the uterus and fallopian tubes?
Prostaglandins & oxytocin
What does the acrosome release?
Hyaluronidase
Hyaluronidase dissolves what layer of the oocyte?
Corona radiata
What penetrates the zona pellucida?
Zona lysin
How long does the fertilized ovum travel in the fallopian tube?
3-5 days
Progesterone causes relaxation of the uterus to allow entry of the blastocyst into the uterine lumen and is produced by what?
Corpus luteum
The outer, smaller cells of the blastocyst divide more rapidly and form the?
Trophoblast
Blood vessels within the teritiary villi will dump into vessels running through the?
Allantoic stalk
Vessel-filled allantoic stalk is also known as the?
Umbilical cord
The chorion + the portion of the uterine endometrium with the trophoblastic lacunae is collectively called the?
Placenta
What causes endometrial cells to become enlarged and store nutrients for the early embryo?
Progesterone from corpus luteum
What cells provide nutrients for embryo for first week and sometimes up through 8th week?
Decidual cells
What is the PO2 of the mother and fetus in the placenta are?
Mother= 50 mmHg Fetus= 30 mmHg
Fetal hemoglobin concentration is about _____% greater than maternal.
50%
When a shift operates in one direction in the maternal blood and in the other direction in the fetal blood, it is referred to as?
The double bohr effect
What is the term for a shift of the oxygen-hemogloin dissociation curve to the right in response to increases in blood CO2 and H+ ions enhancing release of O2 from blood?
Bohr effect
T/F: All foodstuffs diffuse the same way through the placenta.
False, glucose via facilitated diffusion
What is secreted by syncytial trophoblast cells into maternal fluids 8-9 days after ovulation but at highest levels during the 10-12 week of pregnancy?
HCG
What is estrogen secreted by in the placenta?
Syncytiotrophoblast cells
Placental estrogen is created int eh mother’s and fetal _____.
Adrenal glands
What is secreted by the anterior pituitary and promotes milk secretion?
Prolactin
