normal 1st trimester

What  describes  a numeric system describing all pregnancy outcomes?

Parity

What is  synonymous with menstrual age?

Gestational age

What are the Germ Cell Layers that compose the embryonic disc?

Endoderm, Ectoderm, Mesoderm

Menstrual age, when is a morula formed?

Approx Day 17

When does the normal process of physiologic herniation occur?

8-12 weeks

What is the true age of the embryo or fetus?

Fetal age

What is an important role of the trophoblast ?

production of human chorionic gonadotropin

What accounts for  the 2 weeks of 'pregnancy' in the beginning when you are not really pregnant while calculating due date?

Naegele’s Rule

What is the ability to survive in the extrauterine environment?

viability

What is the Rupture of a mature follicle with explosion of ovum?

ovulation

What hormone extends the life of the corpus luteum?

Human chorionic gonadotropin

When does a pregnancy secretes enough HCG to be detected?

9 days

Decidual reaction occurs regardless of implantation site. True or False

true

Where does fertilization occur?

ampulla

NOT BLACK ARROW

dark ring around gest sac

choronic cavity

What is the remaining endometrium not affected by embedded villi?

decidua vera

What is a fertilized egg?

zygote

The first ___ weeks the HCG levels double every other day

6

What forms the Thalami, corpus callosum and 3^rd ventricle?

Diencephalan

What is the splitting of chromosomes?

cleavage / mitosis

What will develop into the embryo, amnion, umbilical cord, and the primary and secondary yolk sacs?

Inner cell layer

yolk sac

What forms the medulla, lower part 4^th ventricle?

Myelencephalon

What is the hypertrophic changes in the endometrial cells?

decidualized endometrium

What is the term used where the villi has regressed and disappeared and becomes smooth completes the capsule for blastocyst?

Chorionic leave/Decidua Capularis

What is the inner single layer of the Trophoblast?

Cytotrophoblast

What refers to the length of time calculated from the first day of the last normal menstrual period to the point at which the pregnancy is being assessed?

Menstrual Age

What is the inner, thinner membrane of pregnancy?

Amniotic Membrane

What are the individual cells of the fertilization?

blastomeres

When does the morula enter the uterus?

day 4

darkest circle

amniotic cavity

What is the term used where villi digs into endometrium?

Chorion Frondosum (fetal contribution)

Decidua Basalis (maternal contribution)

What will the regressed villi become?

chorion leave or smooth chorion

What sonographic sign Represents the amniotic sac- embryo/yolk sac complex?

Double bleb sign (seen around 4-5 weeks)

What forms  the umbilical cord?

yolk stalk and allantois

When is the baby in utero referred to as the embryo?

week 1-10

What is the outer multi-celled layer of the Trophoblast?

Syncytiotrophoblast

What is the fetal contribution to the placenta?

Chorion Frondosum

What is a ball of 12 to 16 blastomeres?

morula

thin white curved line at top

amniotic membraine

What  becomes an outpouching of the ileum in adults, known as Meckel’s diverticulum if it persists?

yolk sac

When does the Kidneys reach adult position?

week 11

What forms the pons, cerebellum, upper part 4^th ventricle?

Metencephalon

Placenta can be seen at _____weeks

10

What forms the cerebral hemispheres, lateral ventricles?

Telencephalan

1. blastocele

2. blastocyst

3. blastomere

What is  the most accurate way to date pregnancy?

crown rump length

What measurement   remains accurate until the 8^th week?

MSD – Mean Sac Diameter

What is the maternal part of the Decidualized Endometrium/maternal placental contribution?

decidua basalis

CRL is typically done up to ____weeks

12 (can  be done up to 14 weeks)

When does the heart start to beat?

Week 5- 6

When does the neural tube form?

6 weeks

rhombencephalon

What structure will later be part of digestive tube for embryo?
 
 

yolk sac

What is the Outer ring of the Double Decidual Sac Sign?

decidua vera

Hematopoiesis (blood cell formation) is preformed by what structure until the eighth week?
 

yolk sac

What describes either dead or not capable of living in the extrauterine environment?

nonviable

When is organogensis is completed?

10 weeks

What are the two hyperechoic rings adjacent to gestational sac?

Double Decidual Sac Sign

The Rhombencephalon (hindbrain) divides into:

Metencephalon

Myelencephalon

What is the inner ring of the Double Decidual Sac Sign?

deciduas capsularis + chorion leave

Menstrual age, when does a zygote form?

Day 14

cleavage occurs in the fallopian tube and results in the formation of______________.

blastomeres

Crown rump length

Cardiac activity should definitively  be seen in a CRL measuring

5-7 mm

G9P4135
describe each pregnancy

4 full term births

1 premature births

3 abortions

5 living children

When is the umbilical cord formed?

6 wekks

What will ultimately create the chorionic membrane and fetal contribution to the placenta?

Outer cell layer or trophoblast

What is having had several pregnancies?

multiparity

What is the First intragestational sac anatomy seen?

yolk sac

What substance cushions the vessels within the umbilical cord?

wharton’s jelly

Amniotic membrane

What is the number of pregnancies, including the present one?

gravidity

What cavity shrinks and is obliterated at 12 weeks?

chorionic cavity

What Controls formation of sex glands?
 

yolk sac

1 – decidua capsularis

2- Chorionic membrane

3 – amniotic cavity

4 – chorionic cavity

5- yolk sac

6 – decidua basalis

What is the developing fourth ventricle and posterior fossa that is seen as a cystic structure during the first trimester?

rhombencephalon

When does the Amnion and Chorion typically fuse?

Around 12 weeks

The Prosencephalon (forebrain) divides into:

Telencephalan

Diencephalan

Where is the yolk sac located?

in the chorionic cavity

What forms the aqueduct of Sylvius?

Mesencephalon

What provides nutrients to the developing embryo?

 

Yolk sac

placenta

What estrogenic hormone is produced by the placenta?

estriol

What peptide hormone is secreted by the placenta during pregnancy?

inhibin A

What seals the fertilized egg?

Zona pellucida

Menstrual age, when is implantation complete?

day 23

What hormone is produced by the trophoblasts and also is used as a tumor marker in nongravid patients and males?

Human chorionic gonadotropin

G7P3033
describe each pregnancy

3 full term births

0 premature births

3 abortions

3 living children

What vessels are contained the umbilical cord?

2 umbilical arteries

1 umbilical vein

What protein is produced by the fetal yolk sac, fetal gastrointestinal tract and the fetal liver; may also be produced by some malignant tumors?

Alpha-fetoprotein

What is the outer, thicker membrane of pregnancy?

Chorionic Membrane

What is the distal segment of the fallopian tube?

infundibulum

Double decidual sac sign

Typically seen around 7 weeks

What are the fingerlike extension of the fallopian tube located on the infundibulum?

FIMBRIAe

70% of all twins are?

Dizygotic (Fraternal) 

What is also called extraembryoic coelom?

Chorionic cavity

What is the physiologic effect on the endometrium in the presence of a pregnancy?

Decidual reaction

What is the level of human chorionic gonadotropin beyond which an intrauterine pregnancy is consistently visible?

Discriminatory zone

G5P2204
describe each pregnancy

2 full term births

2 premature births

0 abortions

4 living children