OB NURS 306 PRACTICE EXAM
Questions and Answers Latest
Updates 2025 Latest Update 2025
GRADED A+
1. follicular phase: 1st day of menstruation. Lasts 12-14 days.
2. ovulatory phase: estrogen peaks and ends with release oocyte
3. luteal phase: after ovulation and lasts around 14 days
4. endometrial cycle: pertains to the changes in the endometrium of the uterus in
responses to the hormonal changes that occur during the ovarian cycle. 3 phases:
proliferative, secretory, and menstrual
,5. proliferative phase: following menstruation and ends with ovulation
6. secretory phase: after ovulation with onset of menstruation
7. menstrual phase: occurs d/t hormone changes and results in sloughing off of
the endometrial tissue
8. fertilization / conception: sperm nucleus enters nucleus of oocyte. Zygote:
fertilized oocyte (diploid chromosomes 46)
9. cell division: cleavage
morula
blastocyst
multiple gestation
10. cleavage: single cell zygote undergoes mitotic cell division
11. morula: 3 days after fertilization, 16 cell solid sphere
12. blastocyst: inner cell mass (embryo blast-->embryo) and the trophoblast -->
placenta
13. multiple gestation: more than one embryo (twins / triplets)
, 14. implantation: embedding of blastocyst into endometrium of uterus around day
5 or 6
15. embryonic stage: time of implantation through 8 weeks of gestation
16. primary germ layers: develops around day 14
17. heart formation: during 3rd week gestation, beats and circulates blood in 4th
week gestation
18. end of 8th week gestation: clearly defined human that is 3 cm in length with
all organ systems formed
19. fetus: from week 9 to birth. Organ systems grow and mature
20. fetal circulation: oxygenated blood enters fetal circulatory system from pla-
centa via umbilical VEIN
21. ductus venosus: connects umbilical vein to inferior vena cava --> right atrium
22. foramen ovale: opening between R & L atria, oxygenated blood shunted to L
atrium. Opening will close after birth in response to increased blood returning to
left atrium (may take up to 3 months for full closure PFO
23. ductus arteriosus: pulmonary artery to descending aorta, oxygenated blood
shunted to aorta and small amount to lungs. After delivery, constricts in response
to higher blood O2 levels and prostaglandins (PDA)
Questions and Answers Latest
Updates 2025 Latest Update 2025
GRADED A+
1. follicular phase: 1st day of menstruation. Lasts 12-14 days.
2. ovulatory phase: estrogen peaks and ends with release oocyte
3. luteal phase: after ovulation and lasts around 14 days
4. endometrial cycle: pertains to the changes in the endometrium of the uterus in
responses to the hormonal changes that occur during the ovarian cycle. 3 phases:
proliferative, secretory, and menstrual
,5. proliferative phase: following menstruation and ends with ovulation
6. secretory phase: after ovulation with onset of menstruation
7. menstrual phase: occurs d/t hormone changes and results in sloughing off of
the endometrial tissue
8. fertilization / conception: sperm nucleus enters nucleus of oocyte. Zygote:
fertilized oocyte (diploid chromosomes 46)
9. cell division: cleavage
morula
blastocyst
multiple gestation
10. cleavage: single cell zygote undergoes mitotic cell division
11. morula: 3 days after fertilization, 16 cell solid sphere
12. blastocyst: inner cell mass (embryo blast-->embryo) and the trophoblast -->
placenta
13. multiple gestation: more than one embryo (twins / triplets)
, 14. implantation: embedding of blastocyst into endometrium of uterus around day
5 or 6
15. embryonic stage: time of implantation through 8 weeks of gestation
16. primary germ layers: develops around day 14
17. heart formation: during 3rd week gestation, beats and circulates blood in 4th
week gestation
18. end of 8th week gestation: clearly defined human that is 3 cm in length with
all organ systems formed
19. fetus: from week 9 to birth. Organ systems grow and mature
20. fetal circulation: oxygenated blood enters fetal circulatory system from pla-
centa via umbilical VEIN
21. ductus venosus: connects umbilical vein to inferior vena cava --> right atrium
22. foramen ovale: opening between R & L atria, oxygenated blood shunted to L
atrium. Opening will close after birth in response to increased blood returning to
left atrium (may take up to 3 months for full closure PFO
23. ductus arteriosus: pulmonary artery to descending aorta, oxygenated blood
shunted to aorta and small amount to lungs. After delivery, constricts in response
to higher blood O2 levels and prostaglandins (PDA)
