Flashcards in 1st Trimester & Terminology Deck (80)
This is the villi on thematernal side of hte embryo; unites with the chorion to form the placenta.
This is the villi surrounding the chorionic sad.
MSD stands for...
mean sac diameter.
This is the fetal trophoblastic tissue that, together with the decidua, form the area for maternal and fetal circulation.
This is the chorion around the gestational sac on the opposide side of implantation.
This is the fetal suface of the placenta.
This is the maternal surface of the placenta.
The four sims of first trimester sonography are...
1. confirm viability
2. accuractely date the pregnancy
3. diagnose multiple preganancies
4. investigate complications
Early in the mentrual cycle, the ___ secretes rising levels of FSH and LH, which cause the growth of follicles.
Early in the mentrual cycle, the pituitary gland secretes rising levels of ___, which cause the growth of follicles.
FSH and LH
This is the follicle that becomes dominant.
mature or Graafian follicle
The developing follicles produce ___.
After ovulation, the follicle collapses to form the ___, which secretes progesterone and estrogen.
After ovulation, the follicle collapses to form the corpus luteum, which secretes ___.
progesterone and estrogen
This is the outer layer of cells of the gestational or chorionic sac that secretes hCG.
___ stimulate endometial cellular proliferation in preparation for implantation.
Progesterone and estrogen
Progesterone and estrogen stimulate ___ in preparation for implantation.
endometial cellular proliferation
These changes occur as a hormonal reponse regardless of the site of implantation.
How many sperm are deposited during intercourse?
Fertilization usually occurs within __ after ovulation in the ___ portion of the fallopian tube.
24-36 hours, ampullary
This is the outer layer of the ovum.
This is the inner cell layer of the developing embryo.
This is a ball of 16 cells surrounded by the zona pellucida tranported to the uterus.
Thisis the organized collection of cells that buries into th endometrial tissue about 7 days after fertilization.
Which is the inner layer of the embryonic disc?
Which is the middle layer of the embryonic disc?
Which is the outer layer of the embryonic disc?
By what day is implantation complete?
Implantation usually occurs in the ___ region of the uterus.