UNITEK OB EXAM 1 [CH 3-5] ACTUAL
2025/2026 QUESTIONS AND 100%
CORRECT ANSWERS
1. Which organ is responsible for implantation of a fertilized ovum?
A) Ovary
B) Fallopian tube
C) Uterus
D) Cervix
Rationale: Implantation normally occurs in the endometrial lining of the uterus.
2. Fertilization typically occurs in which part of the female reproductive
system?
A) Uterus
B) Cervix
C) Ampulla of the fallopian tube
D) Ovary
Rationale: The ampulla is the widest section of the fallopian tube where
fertilization occurs.
3. The primary hormone responsible for maintaining pregnancy in early
stages is:
A) Estrogen
B) Progesterone
C) Oxytocin
D) Prolactin
Rationale: Progesterone maintains the uterine lining and prevents uterine
contractions.
,4. Which structure forms the placenta after implantation?
A) Endometrium and chorion
B) Ovary and uterus
C) Cervix and vagina
D) Myometrium and perimetrium
Rationale: The placenta develops from trophoblastic tissue and maternal
endometrium.
5. The normal duration of a full-term pregnancy is:
A) 28 weeks
B) 32 weeks
C) 37–42 weeks
D) 45 weeks
6. Which pelvic structure is most important in childbirth?
A) False pelvis
B) True pelvis
C) Iliac crest
D) Sacrum only
Rationale: The true pelvis forms the birth canal.
7. The term "gravida" refers to:
A) Number of living children
B) Number of pregnancies
C) Number of abortions only
D) Gestational age
Rationale: Gravida is total number of pregnancies regardless of outcome.
8. The term "parity" refers to:
A) Number of pregnancies
B) Number of deliveries after viability
, C) Number of abortions
D) Number of living children
9. A nurse is teaching a client about the first trimester of pregnancy. Which
event is characteristic of this period?
A) Fetal movement felt regularly
B) Organ formation occurs
C) Rapid fetal weight gain
D) Lung maturation completes
Rationale: Organogenesis occurs during the first trimester when major fetal
structures begin forming.
10. Which hormone is responsible for maintaining the corpus luteum in early
pregnancy?
A) Estrogen
B) Progesterone
C) Human chorionic gonadotropin (hCG)
D) Oxytocin
Rationale: hCG supports the corpus luteum to continue progesterone production.
11. A pregnant client reports nausea and vomiting in early pregnancy. This is
primarily due to:
A) Decreased progesterone
B) Increased hCG levels
C) Decreased estrogen
D) Increased insulin
Rationale: Rising hCG levels are strongly associated with morning sickness.
12. Which finding is considered a presumptive sign of pregnancy?
A) Fetal heartbeat on ultrasound
B) Positive pregnancy test
2025/2026 QUESTIONS AND 100%
CORRECT ANSWERS
1. Which organ is responsible for implantation of a fertilized ovum?
A) Ovary
B) Fallopian tube
C) Uterus
D) Cervix
Rationale: Implantation normally occurs in the endometrial lining of the uterus.
2. Fertilization typically occurs in which part of the female reproductive
system?
A) Uterus
B) Cervix
C) Ampulla of the fallopian tube
D) Ovary
Rationale: The ampulla is the widest section of the fallopian tube where
fertilization occurs.
3. The primary hormone responsible for maintaining pregnancy in early
stages is:
A) Estrogen
B) Progesterone
C) Oxytocin
D) Prolactin
Rationale: Progesterone maintains the uterine lining and prevents uterine
contractions.
,4. Which structure forms the placenta after implantation?
A) Endometrium and chorion
B) Ovary and uterus
C) Cervix and vagina
D) Myometrium and perimetrium
Rationale: The placenta develops from trophoblastic tissue and maternal
endometrium.
5. The normal duration of a full-term pregnancy is:
A) 28 weeks
B) 32 weeks
C) 37–42 weeks
D) 45 weeks
6. Which pelvic structure is most important in childbirth?
A) False pelvis
B) True pelvis
C) Iliac crest
D) Sacrum only
Rationale: The true pelvis forms the birth canal.
7. The term "gravida" refers to:
A) Number of living children
B) Number of pregnancies
C) Number of abortions only
D) Gestational age
Rationale: Gravida is total number of pregnancies regardless of outcome.
8. The term "parity" refers to:
A) Number of pregnancies
B) Number of deliveries after viability
, C) Number of abortions
D) Number of living children
9. A nurse is teaching a client about the first trimester of pregnancy. Which
event is characteristic of this period?
A) Fetal movement felt regularly
B) Organ formation occurs
C) Rapid fetal weight gain
D) Lung maturation completes
Rationale: Organogenesis occurs during the first trimester when major fetal
structures begin forming.
10. Which hormone is responsible for maintaining the corpus luteum in early
pregnancy?
A) Estrogen
B) Progesterone
C) Human chorionic gonadotropin (hCG)
D) Oxytocin
Rationale: hCG supports the corpus luteum to continue progesterone production.
11. A pregnant client reports nausea and vomiting in early pregnancy. This is
primarily due to:
A) Decreased progesterone
B) Increased hCG levels
C) Decreased estrogen
D) Increased insulin
Rationale: Rising hCG levels are strongly associated with morning sickness.
12. Which finding is considered a presumptive sign of pregnancy?
A) Fetal heartbeat on ultrasound
B) Positive pregnancy test
