1st Trimester & Terminology Flashcards Preview

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Flashcards in 1st Trimester & Terminology Deck (80)
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1

This is the villi on thematernal side of hte embryo; unites with the chorion to form the placenta.

decidua basalis

2

This is the villi surrounding the chorionic sad.

decidua capsularis

3

MSD stands for...

mean sac diameter.

4

This is the fetal trophoblastic tissue that, together with the decidua, form the area for maternal and fetal circulation.

chorion frondosum

5

This is the chorion around the gestational sac on the opposide side of implantation.

chorion laeve

6

This is the fetal suface of the placenta.

chorionic plate

7

This is the maternal surface of the placenta.

basal plate

8

The four sims of first trimester sonography are...

1. confirm viability
2. accuractely date the pregnancy
3. diagnose multiple preganancies
4. investigate complications

9

Early in the mentrual cycle, the ___ secretes rising levels of FSH and LH, which cause the growth of follicles.

pituitary gland

10

Early in the mentrual cycle, the pituitary gland secretes rising levels of ___, which cause the growth of follicles.

FSH and LH

11

This is the follicle that becomes dominant.

mature or Graafian follicle

12

The developing follicles produce ___.

estrogen

13

After ovulation, the follicle collapses to form the ___, which secretes progesterone and estrogen.

corpus luteum

14

After ovulation, the follicle collapses to form the corpus luteum, which secretes ___.

progesterone and estrogen

15

This is the outer layer of cells of the gestational or chorionic sac that secretes hCG.

syncytiotrophoblast

16

___ stimulate endometial cellular proliferation in preparation for implantation.

Progesterone and estrogen

17

Progesterone and estrogen stimulate ___ in preparation for implantation.

endometial cellular proliferation

18

These changes occur as a hormonal reponse regardless of the site of implantation.

decidual reaction

19

How many sperm are deposited during intercourse?

200-600 million

20

Fertilization usually occurs within __ after ovulation in the ___ portion of the fallopian tube.

24-36 hours, ampullary

21

This is the outer layer of the ovum.

zona pellucida

22

This is the inner cell layer of the developing embryo.

cytotrophoblast

23

This is a ball of 16 cells surrounded by the zona pellucida tranported to the uterus.

morula

24

Thisis the organized collection of cells that buries into th endometrial tissue about 7 days after fertilization.

blastocyst

25

Which is the inner layer of the embryonic disc?

endoderm

26

Which is the middle layer of the embryonic disc?

mesoderm

27

Which is the outer layer of the embryonic disc?

ectoderm

28

By what day is implantation complete?

day 23

29

Implantation usually occurs in the ___ region of the uterus.

fundal

30

The 3 distinct layers of decidualized endometrium are...

decidua capsularis, basalis, and parietalis (vera)