RNC-OB exam 2025, obstetric nursing
exam, RNC-OB questions and answers
withDetailed Rationales Graded A+,
RNC-OB exam 2025, obstetric nursing exam,
RNC-OB questions and answers with Detailed
Rationales Graded A+, 2025 nursing
certification, maternal care exam, RNC-OB test
prep, verified OB answers all INCUDED -pdf 3
A woman missed her menstrual period 1 week ago and has come to the doctor's office for a
pregnancy test. The nurse knows that the placental hormone measured in pregnancy tests is:
a. progesterone.
b. estrogen.
c. human chorionic gonadotropin.
d. human placental lactogen. - ANS :ANS: C
Human chorionic gonadotropin is the basis for most pregnancy tests. It is detectable in
maternal blood as soon as implantation occurs, usually 7 to 9 days after fertilization.
When preparing to teach a class about prenatal development, the nurse would include
information about folic acid supplementation because it is known to prevent:
a. congenital heart defects.
b. neural tube defects.
c. mental retardation.
TEST BANK 1
, RNC-OB exam 2025, obstetric nursing
exam, RNC-OB questions and answers
withDetailed Rationales Graded A+,
d. premature birth - ANS :ANS: B
It is now known that folic acid supplements can prevent neural tube defects such as spina
bifida.
The nurse informs a class of expectant parents that the fetus is first considered viable at the
age of _____ weeks.
a. 14
b. 20
c. 25
d. 30 - ANS :ANS: B
By 20 weeks of gestation, the lungs have matured enough for the fetus to survive outside the
uterus (age of viability).
The nurse explains that if one parent has a dominant gene and the other parent does not, the
percentage of children carrying the dominant gene will be:
a. 10%.
b. 25%.
c. 50%.
d. 100%. - ANS :ANS: C
If one parent has a dominant trait and the other does not, then 50% of the children will inherit
the trait.
TEST BANK 2
, RNC-OB exam 2025, obstetric nursing
exam, RNC-OB questions and answers
withDetailed Rationales Graded A+,
The nurse explains that monozygotic twins are frequently below average birth weight
because of inadequate:
a. space in the uterus.
b. blood supply.
c. maternal health.
d. placental nutrition. - ANS :ANS: D
The single placenta may not be able to provide adequate nutrition to two fetuses.
The school nurse counseling a group of adolescent girls states that sperm ejaculated near the
cervix:
a. are destroyed by the acidic pH of the vagina.
b. survive up to 5 days and can cause pregnancy.
c. lose their motility in about 12 hours after intercourse.
d. are usually pushed out of the vagina by the muscular action of the vaginal wall. - ANS :ANS:
B
Sperm ejaculated near the cervix can survive up to 5 days and cause pregnancy even before
ovulation.
The nurse explains that survival of the X and Y bearing sperm after intercourse can be
affected by the woman's:
a. age.
TEST BANK 3
, RNC-OB exam 2025, obstetric nursing
exam, RNC-OB questions and answers
withDetailed Rationales Graded A+,
b. estrogen level.
c. body temperature.
d. level of feminine hygiene. - ANS :ANS: B
Estrogen levels and the pH of the female reproductive tract can affect the survival of the X-
and Y-bearing sperm as well as their motility.
The normal umbilical cord is comprised of:
a. 1 artery carrying blood to the fetus and 1 vein carrying blood away from the fetus.
b. 1 artery carrying blood to the fetus and 2 veins carrying blood away from the fetus.
c. 2 arteries carrying blood away from the fetus and 1 vein carrying blood to the fetus.
d. 2 arteries carrying blood to the fetus and 2 veins carrying blood away from the fetus. - ANS
:ANS: C
The umbilical cord is comprised of 2 arteries carrying blood away from the fetus and 1 vein
carrying blood to the fetus.
A nurse is teaching a class on fetal development to a class of high school students and
explains the primary germ layers. What are the germ layers? Select all that apply.
a. Ectoderm
b. Endoderm
c. Mesoderm
d. Plastoderm
TEST BANK 4
exam, RNC-OB questions and answers
withDetailed Rationales Graded A+,
RNC-OB exam 2025, obstetric nursing exam,
RNC-OB questions and answers with Detailed
Rationales Graded A+, 2025 nursing
certification, maternal care exam, RNC-OB test
prep, verified OB answers all INCUDED -pdf 3
A woman missed her menstrual period 1 week ago and has come to the doctor's office for a
pregnancy test. The nurse knows that the placental hormone measured in pregnancy tests is:
a. progesterone.
b. estrogen.
c. human chorionic gonadotropin.
d. human placental lactogen. - ANS :ANS: C
Human chorionic gonadotropin is the basis for most pregnancy tests. It is detectable in
maternal blood as soon as implantation occurs, usually 7 to 9 days after fertilization.
When preparing to teach a class about prenatal development, the nurse would include
information about folic acid supplementation because it is known to prevent:
a. congenital heart defects.
b. neural tube defects.
c. mental retardation.
TEST BANK 1
, RNC-OB exam 2025, obstetric nursing
exam, RNC-OB questions and answers
withDetailed Rationales Graded A+,
d. premature birth - ANS :ANS: B
It is now known that folic acid supplements can prevent neural tube defects such as spina
bifida.
The nurse informs a class of expectant parents that the fetus is first considered viable at the
age of _____ weeks.
a. 14
b. 20
c. 25
d. 30 - ANS :ANS: B
By 20 weeks of gestation, the lungs have matured enough for the fetus to survive outside the
uterus (age of viability).
The nurse explains that if one parent has a dominant gene and the other parent does not, the
percentage of children carrying the dominant gene will be:
a. 10%.
b. 25%.
c. 50%.
d. 100%. - ANS :ANS: C
If one parent has a dominant trait and the other does not, then 50% of the children will inherit
the trait.
TEST BANK 2
, RNC-OB exam 2025, obstetric nursing
exam, RNC-OB questions and answers
withDetailed Rationales Graded A+,
The nurse explains that monozygotic twins are frequently below average birth weight
because of inadequate:
a. space in the uterus.
b. blood supply.
c. maternal health.
d. placental nutrition. - ANS :ANS: D
The single placenta may not be able to provide adequate nutrition to two fetuses.
The school nurse counseling a group of adolescent girls states that sperm ejaculated near the
cervix:
a. are destroyed by the acidic pH of the vagina.
b. survive up to 5 days and can cause pregnancy.
c. lose their motility in about 12 hours after intercourse.
d. are usually pushed out of the vagina by the muscular action of the vaginal wall. - ANS :ANS:
B
Sperm ejaculated near the cervix can survive up to 5 days and cause pregnancy even before
ovulation.
The nurse explains that survival of the X and Y bearing sperm after intercourse can be
affected by the woman's:
a. age.
TEST BANK 3
, RNC-OB exam 2025, obstetric nursing
exam, RNC-OB questions and answers
withDetailed Rationales Graded A+,
b. estrogen level.
c. body temperature.
d. level of feminine hygiene. - ANS :ANS: B
Estrogen levels and the pH of the female reproductive tract can affect the survival of the X-
and Y-bearing sperm as well as their motility.
The normal umbilical cord is comprised of:
a. 1 artery carrying blood to the fetus and 1 vein carrying blood away from the fetus.
b. 1 artery carrying blood to the fetus and 2 veins carrying blood away from the fetus.
c. 2 arteries carrying blood away from the fetus and 1 vein carrying blood to the fetus.
d. 2 arteries carrying blood to the fetus and 2 veins carrying blood away from the fetus. - ANS
:ANS: C
The umbilical cord is comprised of 2 arteries carrying blood away from the fetus and 1 vein
carrying blood to the fetus.
A nurse is teaching a class on fetal development to a class of high school students and
explains the primary germ layers. What are the germ layers? Select all that apply.
a. Ectoderm
b. Endoderm
c. Mesoderm
d. Plastoderm
TEST BANK 4
