Pregnancy and Reproduction 1000ft View Flashcards
What cells are the located at the site of implementation?
Stromal cells
Is amniotic fluid sterile?
Yes, but immune cells are within the lining in wait for an infectious invader
What other substance is within sperm?
Prostoglandins, and these help propel them upward
What helps sperm find the egg?
Prostoglandins (seminal fluid) in sperm and female orgasm
What is the lifespan of sperm?
24-48 hours
What causes the white color of sperm?
Prostatic fluid
Where does fertilization usually occur?
Ampulla of the fallopian tube
What is the concept of monospermy?
One single sperm is allowed to enter the cell, once entered the cell will depolarize so no others are able to enter
Breakdown of what layer allows sperm to reach the plasma membrane of the egg?
Zona pellucida
How long does it take epithelium lining to reach max thickness after fertilization?
1 week
After fertilization, the zygote will continue to divide to form?
Blastocyte
When will the blastocyte implant?
6 days after fertilization
When does implantation of the blastocyte occur?
16-22 days
What is the inner layer of the trophoblast?
Amnion
What is the outer layer of the trophoblast?
Chorion
When does the hypothalamus/pituitary of the fetus develop?
12 weeks
What hormones will be elevated in female fetus’ to produce ova?
LH and FSH
When does the fetal heart begin to contract?
Day 21
What increases O2 delivery to the fetus?
Fetal hemoglobin, higher affinity to oxygen (increased oxygen and lower CO2)
Increased estrogen levels during pregnancy helps to
Allow for enlargement of the uterus
Increase breast tissue/duct development
Increase external genitalia
Increase tissue laxity
How much weight does mom typically gain on average during pregnancy?
25-35lb
What are the early symptoms of pregnancy?
Late period
Tender breasts
Light spotting
Nausea
Fatigue
Cramping
Who much does mom’s blood volume increase in the third trimester?
30%
What is parturition?
Decrease of progesterone relative to estrogen to allow for uterine contraction (labor)
What allows for appropriate progression of labor?
Prostaglandins
The uterine contractions are infrequent, uncomfortable, and in some cases irregular, but they generate sufficient force to cause dilation and effacement of the cervix. Which phase of labor does this describe?
Latent Phase of Labor
The premature newborn is more vulnerable to the effects of drugs because of which of the following?
Poorly developed BBB
Couvelaire is a name given to which of the following that occurs during abruptio placentae?
A uterus that contains extravasated blood that has dissected between the myometrial fibers
How many layers of cell types make up the follicular wall?
9
The most significant act of progesterone on the uterus is
Prepare for pregnancy (nesting)
What hormone is responsible for ovulation?
LH
What is the site of rupture of the mature Graafian follicle?
The stigma
