NURS368 Exam 1 Questions And 100% Correct
Answers
Where does fertilization occur?
distal 3rd of the fallopian tube (near ovary), enters uterus 3 days later
How long do sperm survive?
1-2 days
How long do sperm remain in the female tract?
up to 80 hours
Embryonic Period
Extends from beginning of the third week until the eighth week after conception, by end
of 8th week all organ systems in place but developing
What period do teratogens cause major structural and functional damage to developing
organs?
Embryonic period
Week that embryo develops heartbeat
4th week of gestation
Fetal Period
Beginning 9 weeks after conception and extending until birth, rapidly dividing cells
become fetus, dramatic growth and refinement of established organs
12 Weeks Gestation
,Fetus: 8cm long, 45 g
Sucking reflex
Fetal sex determination
Lanugo develops
Fetus excretes urine into amniotic fluid
Baby's heart rate heard with doppler (10-12 weeks)
At what gestation can a fetal heart rate be heard with a doppler?
10-12 weeks gestation
16 Weeks Gestation
Fetus: 14 cm, 200 g
Swallowing amniotic fluid
Quickening occurs
Eyes face forward rather than to the side
What is quickening and when does it occur?
Fetal movement, can be felt at 16 weeks (earlier if mom has been pregnant before)
20 Weeks Gestation
Fetus: 19 cm, 450 g
Vernix caseosa/lanugo covers entire body
Fetus reacts to loud noises
Fetal movement felt by all moms
Brain developing rapidly
Vernix
,Thick, greasy substance that forms a protective coating on the baby's skin in utero
Lanugo
Fine, soft, downy hair covering the baby's skin in utero
At what gestation are fetal movements usually felt by all moms?
16-20 weeks gestation
20 Weeks Gestation
Mom definitely should feel fetal movement
Fetal heartbeat can be heard with fetoscope
24 Weeks Gestation
Fetus: 23 cm, 820 g
Eyebrows, eyelashes, fingernails
Able to hiccup
Activity increases
Fingerprints, footprints develop
Surfactant production begins
Surfactant
Slippery, soap-like substance necessary for respiration at birth, start secreting at 24
weeks; decreases surface tension in alveoli so they don't collapse with each breath
28 Weeks Gestation
Fetus: 27 cm, 1300 g
Eyes open and close (~26 weeks)
, Lungs are immature
Deposition of SubQ fat
32 Weeks Gestation
Fetus: 30 cm, 2100 g
Period of very rapid growth
Excellent development of the brain
Lanugo starting to disappear
38-40 Weeks Gestation
Fetus: 36 cm, 3400 g
Fills entire uterus
Lungs mature
Completely developed could survive outside of utero
Vernix in creases/skin folds
Lanugo on upper shoulders/back
Ear cartilage firm
Fingernails extend beyond fingertips
Testes palpable in scrotum
Accessory Structures of Pregnancy
Placenta, Umbilical Cord, Fetal Membranes
Functions of the placenta
Metabolic and gas exchange, hormone production progesterone, estrogen, hCG, hPL
At what point in pregnancy is the placenta completely functional?
Answers
Where does fertilization occur?
distal 3rd of the fallopian tube (near ovary), enters uterus 3 days later
How long do sperm survive?
1-2 days
How long do sperm remain in the female tract?
up to 80 hours
Embryonic Period
Extends from beginning of the third week until the eighth week after conception, by end
of 8th week all organ systems in place but developing
What period do teratogens cause major structural and functional damage to developing
organs?
Embryonic period
Week that embryo develops heartbeat
4th week of gestation
Fetal Period
Beginning 9 weeks after conception and extending until birth, rapidly dividing cells
become fetus, dramatic growth and refinement of established organs
12 Weeks Gestation
,Fetus: 8cm long, 45 g
Sucking reflex
Fetal sex determination
Lanugo develops
Fetus excretes urine into amniotic fluid
Baby's heart rate heard with doppler (10-12 weeks)
At what gestation can a fetal heart rate be heard with a doppler?
10-12 weeks gestation
16 Weeks Gestation
Fetus: 14 cm, 200 g
Swallowing amniotic fluid
Quickening occurs
Eyes face forward rather than to the side
What is quickening and when does it occur?
Fetal movement, can be felt at 16 weeks (earlier if mom has been pregnant before)
20 Weeks Gestation
Fetus: 19 cm, 450 g
Vernix caseosa/lanugo covers entire body
Fetus reacts to loud noises
Fetal movement felt by all moms
Brain developing rapidly
Vernix
,Thick, greasy substance that forms a protective coating on the baby's skin in utero
Lanugo
Fine, soft, downy hair covering the baby's skin in utero
At what gestation are fetal movements usually felt by all moms?
16-20 weeks gestation
20 Weeks Gestation
Mom definitely should feel fetal movement
Fetal heartbeat can be heard with fetoscope
24 Weeks Gestation
Fetus: 23 cm, 820 g
Eyebrows, eyelashes, fingernails
Able to hiccup
Activity increases
Fingerprints, footprints develop
Surfactant production begins
Surfactant
Slippery, soap-like substance necessary for respiration at birth, start secreting at 24
weeks; decreases surface tension in alveoli so they don't collapse with each breath
28 Weeks Gestation
Fetus: 27 cm, 1300 g
Eyes open and close (~26 weeks)
, Lungs are immature
Deposition of SubQ fat
32 Weeks Gestation
Fetus: 30 cm, 2100 g
Period of very rapid growth
Excellent development of the brain
Lanugo starting to disappear
38-40 Weeks Gestation
Fetus: 36 cm, 3400 g
Fills entire uterus
Lungs mature
Completely developed could survive outside of utero
Vernix in creases/skin folds
Lanugo on upper shoulders/back
Ear cartilage firm
Fingernails extend beyond fingertips
Testes palpable in scrotum
Accessory Structures of Pregnancy
Placenta, Umbilical Cord, Fetal Membranes
Functions of the placenta
Metabolic and gas exchange, hormone production progesterone, estrogen, hCG, hPL
At what point in pregnancy is the placenta completely functional?
