OB EXAM STUDY GUIDE 2026
CERTIFICATION QUESTIONS AND
ANSWERS DETAILED REVIEW MATERIAL
COMPREHENSIVE STUDY GRADED A+
⩥ A monozygotic, monochorionic and monoamniotic pregnancy is also
referred to as
a. Fraternal Twins
b. Ectopic Pregnancy
c. Identical Twins
d. Singleton pregnancy.
Answer: d. Singleton pregnancy
⩥ Results from the fertilization of two separate eggs during the same
pregnancy. May be of the same or different sexes. They share half of
their genes just like any other siblings..
Answer: Fraternal Twins/Dizygotic
⩥ Twins that result from fertilization of a single egg with a single sperm
and then during the embryonic development, or during the cell splits,
those massive eggs split into two individuals, which later develop into
two offspring. Share all of their genes and are always of the same sex..
Answer: Identical/Monozygotic
,⩥ The tip of the iceberg sign usually refers to which mass?
a. ovarian cancer
b. cystadenoma
c. dermoid cyst
d. cystadenocarcinoma.
Answer: c. dermoid cyst
⩥ A saclike growth that is present at birth. It contains structures such as
hair, fluid, teeth, or skin glands that can be found on or in the skin. These
cysts grow slowly and are not tender unless ruptured. They usually occur
on the face, inside the skull, on the lower back, and in the ovaries. Form
from embryonic cells..
Answer: Dermoid Cyst/Teratomas
⩥ These develop on the surface of an ovary and might be filled with
watery or a mucous material..
Answer: Cystadenomas
⩥ These develop as a result of a condition in which uterine endometrial
cells grow outside your uterus ( endometriosis.). Some of the tissue can
attach to your ovary and form a growth..
Answer: Endometriomas
, ⩥ The lecithin/sphingomyelin ratio is used to determine
a. Trisomy 21
b. amnionitis
c. fetal lung maturity
d. fetal cardiac malformations.
Answer: c. fetal lung maturity
⩥ Days 14-28 of the endometrial cycle
a. early proliferative phase
b. late proliferative phase
c. secretory phase
d. menstrual phase.
Answer: c. secretory phase.
⩥ Phase 1: The Follicular / Proliferative Phase.
Answer: Day 0-14 of the menstrual cycle.
Main hormone= estrogen
Purpose= to grow endometrial layer of the uterus.
⩥ Ovulation.
CERTIFICATION QUESTIONS AND
ANSWERS DETAILED REVIEW MATERIAL
COMPREHENSIVE STUDY GRADED A+
⩥ A monozygotic, monochorionic and monoamniotic pregnancy is also
referred to as
a. Fraternal Twins
b. Ectopic Pregnancy
c. Identical Twins
d. Singleton pregnancy.
Answer: d. Singleton pregnancy
⩥ Results from the fertilization of two separate eggs during the same
pregnancy. May be of the same or different sexes. They share half of
their genes just like any other siblings..
Answer: Fraternal Twins/Dizygotic
⩥ Twins that result from fertilization of a single egg with a single sperm
and then during the embryonic development, or during the cell splits,
those massive eggs split into two individuals, which later develop into
two offspring. Share all of their genes and are always of the same sex..
Answer: Identical/Monozygotic
,⩥ The tip of the iceberg sign usually refers to which mass?
a. ovarian cancer
b. cystadenoma
c. dermoid cyst
d. cystadenocarcinoma.
Answer: c. dermoid cyst
⩥ A saclike growth that is present at birth. It contains structures such as
hair, fluid, teeth, or skin glands that can be found on or in the skin. These
cysts grow slowly and are not tender unless ruptured. They usually occur
on the face, inside the skull, on the lower back, and in the ovaries. Form
from embryonic cells..
Answer: Dermoid Cyst/Teratomas
⩥ These develop on the surface of an ovary and might be filled with
watery or a mucous material..
Answer: Cystadenomas
⩥ These develop as a result of a condition in which uterine endometrial
cells grow outside your uterus ( endometriosis.). Some of the tissue can
attach to your ovary and form a growth..
Answer: Endometriomas
, ⩥ The lecithin/sphingomyelin ratio is used to determine
a. Trisomy 21
b. amnionitis
c. fetal lung maturity
d. fetal cardiac malformations.
Answer: c. fetal lung maturity
⩥ Days 14-28 of the endometrial cycle
a. early proliferative phase
b. late proliferative phase
c. secretory phase
d. menstrual phase.
Answer: c. secretory phase.
⩥ Phase 1: The Follicular / Proliferative Phase.
Answer: Day 0-14 of the menstrual cycle.
Main hormone= estrogen
Purpose= to grow endometrial layer of the uterus.
⩥ Ovulation.
