Review questions for lesson 6

Question 1

All of this happens in the 4th to 5th month of development
except:

a. Eyebrows and head are visible
b. Movements of fetus are felt by the mother
c. Reflex activity already present
d. Covered with fine hair called Lanugo

Answer 1

C. Reflex activity already present happens in the 3rd week of
development

Question 2

During the third month,
a. The fetus lengthen rapidly
b. The face becomes more human looking
c. The skin of the fetus is reddish and has wrinkled appearance.
d. Movements of the fetus can be felt by the mother

Answer 2

B.
4th and 5th month- The fetus lengthen rapidly
5th month- Movement of the fetus can be felt by the mother
6th month- The skin of the fetus is reddish and has a wrinkled
appearance. (Langman’s Chap 8)

Question 3

Oocyte is usually fertilized after
a. 3 hrs of ovulation
b. 10 hrs of ovulation
c. 7 hrs of ovulation
d. 12 hrs of ovulation

Answer 3

D. Oocyte is usually fertilized within 12 hrs of ovulation; however, sperm deposited in the reproductive tract up to 6 days prior to ovulation can survive to fertilize oocytes (pg 2; Langman’s Chap 8)

Question 4

Time of birth
a. 40 weeks after the last normal menstrual period
b. 40 weeks after fertilization
c. CHL is 36 cm
d. Head is one-third of CHL

Answer 4

A.
The obstetrician calculates the date of birth as 280 days or 40 weeks from the first day of the last normal menstrual period (LNMP)
(Langman’s Chap 8)

Question 5

There are very few malformations during the fetal period
a. True
b. False

Answer 5

a. True

Question 6

The crown-rump length
a. Difficult to measure compared to crown-heel length
b. Correlates with the age of the fetus
c. is the standing height
d. Is expressed in inches

Answer 6

B.
Crown-heel length (CHL) is more difficult to measure
CRL- sitting height; CHL-standing height
CRL is expressed in centimeters
(Dr. Naval ppt)

Question 7

At birth, the size of the head is one-fourth of the CRL
a. True
b. False

Answer 7

B.
One-fourth of the CHL

Question 8

IUGR is accompanied by severe neurologic deficits in 90% of babies
a. True
b. False

Answer 8

B.
Approximately 1 in 10 babies have IUGR and therefore have an
increased risk of neurological problems, congenital malformations,
meconium aspiration, hypoglycemia, hypocalcemia and respiratory distress syndrome. (Langman’s Chap 8)

Question 9

Chorionic villus sampling carries a lower risk to the fetus compared to amniocentesis
a. True
b. False

Answer 9

B.
0.5% fetal loss with amniocentesis
0.8% fetal loss with chorionic villus sampling (Dr. Naval ppt

Question 9

Age of fetus may be estimated by its morphological characteristics
a. True
b. False

Answer 9

A.
Age of fetus estimated by:
- Onset of last menstrual period
- Fetal length
- Weight
- Morphological characteristics
- Ultrasound, valuable tool