NSG 211 EXAM 1 OB UPDATED ACTUAL QUESTIONS
AND CORRECT ANSWERS
Question:
What is normal pregnancy length?
Answer:
•Pregnancy length= 40 weeks
Question:
What is considered first trimester?
Answer:
trimester-week 1 through week 12
Question:
What is considered second trimester?
Answer:
13 through week 27
Question:
What is considered 3rd trimester?
Answer:
week 28 through delivery
Question:
What develops in the 4th week?
Answer:
dev of spinal cord and heart
Question:
what develops in the 8th week?
Answer:
gestational wk: organogenesis
Question:
what develops in the 12th-13th week?
Answer:
•HR audible by u/s, spont. movements visible on ultrasound (this is the end of first
trimester)
Question:
What develops in the 16thweek
Answer:
gestational wk: FHR via stethoscope, swallowing reflex
,Question:
What happens in the 20th week?
Answer:
•gestational wk: fetal movement felt by mom, fetal sleep/activity patterns (the first
movements are known as quickening
Question:
what happens in the 24th-27th weeks?
Answer:
end of second trimester) currently viability is considered. 24th week marks age of
viabity
Question:
what happens at 28th week?
Answer:
gestational wk: surfactant dev
Question:
what happens at 32 week?
Answer:
gestational wk: SQ fat, responds to external sounds
Question:
What happens at 36 weeks?
Answer:
•gestational wk: Turn vertex, more SQ fat (brown fat) -babies turn to a vertex position,
inc sc fat
Question:
what happens at week 40?
Answer:
-(end of third trimester) gestational wk: active FM, begin conversion to newborn --
active fetal movements, conversion of fetal hgb to newborn hgb
Question:
what is a monozygotic fertilization?
Answer:
single ovum and sperm and in the process of cell divisions, the zygote divides into two
identical individuals. One placenta and one chorion, but two amnions and two
umbilical cords. The twins are always the same sex
Question:
what is a dizygotic fertilization?
Answer:
are the result of fetilization of two separate ova and two separate sperm. They have two
placentas two chorions, two amnions and two umilical cords. They may be of the same
or different sex
, Question:
What are common tetratogens?
Answer:
•Drugs • •Alcohol • •Tobacco • •Environmental radiation, maternal infections, chemicals,
and drugs.
Question:
How do we assess the damage of tetratogens?
Answer:
•Strength -- amount of exposure, for example Radiation in the form of an x-ray is very
damaging to the growing fetus but radiation in the form of sun rays is not. • •Timing -if
exposure occurs prior to implantation - may not be affected, occurs during embryonic
life - fetus is very vulnerable to injury and then there is a decrease risk after all organs
formed and are near maturation • •Affinity-certain teratogen have a certain affinity to
body tissues such as lead will impair the cns, tetracycline will impair the teeth,
thalomidide will affect the limbs development
Question:
What are presumptive signs of pregnancy?
Answer:
least indicative of pregnancy, they could easily indicate other conditions. Breast
changes, n&v, amenorrhea, frequent urination, fatigue, uterine enlargement,
quickening, linea nigra, striae
Question:
What are probable signs of pregnancy?
Answer:
can be documented by the examiner. HCG serum test (molar), chadwicks, goodell,
haegars, braxton hick contractions
Question:
What are positive signs of pregnancy?
Answer:
demonstration of a fetal heart beat separate from the mothers, fetal movement felt by
the examiner, visualization of the fetus by u/s.
Question:
Where is the uterus at 12 weeks?
Answer:
under symphysis pubis,
Question:
Where is the uterus at 20 weeks?
Answer:
reach the umbilicus
AND CORRECT ANSWERS
Question:
What is normal pregnancy length?
Answer:
•Pregnancy length= 40 weeks
Question:
What is considered first trimester?
Answer:
trimester-week 1 through week 12
Question:
What is considered second trimester?
Answer:
13 through week 27
Question:
What is considered 3rd trimester?
Answer:
week 28 through delivery
Question:
What develops in the 4th week?
Answer:
dev of spinal cord and heart
Question:
what develops in the 8th week?
Answer:
gestational wk: organogenesis
Question:
what develops in the 12th-13th week?
Answer:
•HR audible by u/s, spont. movements visible on ultrasound (this is the end of first
trimester)
Question:
What develops in the 16thweek
Answer:
gestational wk: FHR via stethoscope, swallowing reflex
,Question:
What happens in the 20th week?
Answer:
•gestational wk: fetal movement felt by mom, fetal sleep/activity patterns (the first
movements are known as quickening
Question:
what happens in the 24th-27th weeks?
Answer:
end of second trimester) currently viability is considered. 24th week marks age of
viabity
Question:
what happens at 28th week?
Answer:
gestational wk: surfactant dev
Question:
what happens at 32 week?
Answer:
gestational wk: SQ fat, responds to external sounds
Question:
What happens at 36 weeks?
Answer:
•gestational wk: Turn vertex, more SQ fat (brown fat) -babies turn to a vertex position,
inc sc fat
Question:
what happens at week 40?
Answer:
-(end of third trimester) gestational wk: active FM, begin conversion to newborn --
active fetal movements, conversion of fetal hgb to newborn hgb
Question:
what is a monozygotic fertilization?
Answer:
single ovum and sperm and in the process of cell divisions, the zygote divides into two
identical individuals. One placenta and one chorion, but two amnions and two
umbilical cords. The twins are always the same sex
Question:
what is a dizygotic fertilization?
Answer:
are the result of fetilization of two separate ova and two separate sperm. They have two
placentas two chorions, two amnions and two umilical cords. They may be of the same
or different sex
, Question:
What are common tetratogens?
Answer:
•Drugs • •Alcohol • •Tobacco • •Environmental radiation, maternal infections, chemicals,
and drugs.
Question:
How do we assess the damage of tetratogens?
Answer:
•Strength -- amount of exposure, for example Radiation in the form of an x-ray is very
damaging to the growing fetus but radiation in the form of sun rays is not. • •Timing -if
exposure occurs prior to implantation - may not be affected, occurs during embryonic
life - fetus is very vulnerable to injury and then there is a decrease risk after all organs
formed and are near maturation • •Affinity-certain teratogen have a certain affinity to
body tissues such as lead will impair the cns, tetracycline will impair the teeth,
thalomidide will affect the limbs development
Question:
What are presumptive signs of pregnancy?
Answer:
least indicative of pregnancy, they could easily indicate other conditions. Breast
changes, n&v, amenorrhea, frequent urination, fatigue, uterine enlargement,
quickening, linea nigra, striae
Question:
What are probable signs of pregnancy?
Answer:
can be documented by the examiner. HCG serum test (molar), chadwicks, goodell,
haegars, braxton hick contractions
Question:
What are positive signs of pregnancy?
Answer:
demonstration of a fetal heart beat separate from the mothers, fetal movement felt by
the examiner, visualization of the fetus by u/s.
Question:
Where is the uterus at 12 weeks?
Answer:
under symphysis pubis,
Question:
Where is the uterus at 20 weeks?
Answer:
reach the umbilicus
