Chapter 18: Review Question

Question 1

A sonographer can minimize thermal effects by which one of the following?
a. not staying in one spot too long
b. places the focus of the beam in the near field
c. scanning over fetal bone
d. increasing acoustic output

Answer 1

a

Question 2

A sonogram at 8 weeks gestatioin demonstrates a cystic area within the posterior cranium.

Answer 2

Normal rhombencephalon

Question 3

In early pregnancy, the gestational sac grows at a rate of ___ mm/day.

Answer 3

1-2

Question 4

In the first trimester, herniated bowel will return within the abdominal cavity by the ____ week.

Answer 4

12th

Question 5

The blastocyst typically enters the uterus ____ days after fertilization.

Answer 5

6 days

Question 6

The crown-rump length measurement is considered most accurate through the ____ gestational week.

Answer 6

twelfth

Question 7

The diameter of the normal yolk sac should never exceed ___ mm.

Answer 7

6 mm

Question 8

The embryonic heart begins to beat at ____ days after conception.

Answer 8

23

Question 9

The interface between the decidua capsularis and echogenic vascular endometrium is which of the following?
a. decidua capsularis
b. decidua basalis
c. double decidual sign
d. chorionic cavity

Question 10

The villi on the myometrial side of the conceptus are known as which one of the following?
a. double decidual sign
b. decidua basalis
c. decidua capsularis
d. chorion laeve

Answer 10

Decidua basalis

Question 11

To calculate the mean sac diameter of a gestational sac, which one of the following formulas would be used?
a. length x width x height
b. length + width + height
c. (length x width x height) / 3
d. (length + width + height) / 3

Answer 11

D

Question 12

Select the normal chromosome for an ovum
a. 46 XXY
b. 46 XY or 46 XX
c. 23 CO
d. 22X or 22Y

Question 13

Using a transvaginal approach, the first structure visualized within a gestational sac is which one of the following?

Answer 13

Secondary yolk sac

Question 14

What is the area between the myometrium and the placenta?

Answer 14

Retroplacental zone

Question 15

Which of the following laboratory tests is used to indicate pregnancy when the values are elevated?
a. FSH
b. LH
c. hCG
d. HL

Answer 15

c

Question 16

Which one of the following structures forms early in gestation and surrounds the embryo?
a. chorionic cavity
b. chorion frondosum
c. amniotic cavity
d. fetal cavity

Answer 16

C

Question 17

Where does implantation of the embryo occur?

Answer 17

Uterus

Question 18

A normal gestation lasts approximately:

Answer 18

280 days

Question 19

Which hormone triggers ovulation?

Answer 19

LH

Question 20

What portion of the fallopian tube does fertilization generally occur in?

Answer 20

ampullary

Question 21

Name the solid call of developing cells that occurs after fertilization

Answer 21

morula

Question 22

Identify the blastocyst layer that eventually develops into the embryonic portion of the placenta

Answer 22

Trophoblast

Question 23

Which structures images after the secondary yolk sac?
a. zygote
b. primary yolk sac
c. exocoelomic cavity
d. embryo

Answer 23

D

Question 24

Select the gestational age when the yolk sac images between the chorion and amnion.
a. carnegie stage 11
b. 11 weeks
c. canegie stage 20
d. 5 weeks

Answer 24

C

Question 25

Which of the following contributes to the maternal portion of the placenta?
a. embryonic ectoderm
b. chorionic villi
c. chorion laeve
d. decidua basalis

Answer 25

D

Question 26

Choose the quantitative pregnancy test.
a. serum beta hCG
b. urine
c. thyroxin
d. progesterone

Answer 26

A

Question 27

What would be the correct formula to calculate gestational age in days?

Answer 27

MSD+30

Question 28

What is the formula to calculate gestational age in weeks?

Answer 28

Menstrual age in days /7

Question 29

What would be the gestational age of an embryo with a CRL of 0.38 cm?

Answer 29

6.38 weeks

Question 30

Using Naegele’s rule, what would be the estimated due date for a woman with a LMP of September 10th?

Answer 30

July 17

Question 31

Ultrasound in the first trimester is mostly performed to demonstate:

Answer 31

EDD, GA, and likelihood of continuing to term

Question 32

What prevents more than one sperm from entering an ovum?

Answer 32

zona pellucida

Question 33

At what age have the rudimentary forms of all embryonic organs and structures developed?

Answer 33

11 weeks

Question 34

The portion of the endometrium that surrounds the blastocyst is:

Answer 34

Decidua capsularis