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NURS 135 Exam 1 2024_2025 fully solved & updated
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NURS 135 Exam 1 2024_2025 fully solved & updated
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NURS 135 Exam 1 2024/2025 fully solved& updated
Formed when fertilization occurs - ANSWER-Zygote
hormones secreted by anterior pituitary - ANSWER-FSH-follicle stimulating
hormone
LH-luteinizing hormone
Prolactin-causes breast milk to be made
GH
causes breast milk to be made - ANSWER-prolactin
rise triggers ovulation and development of corpus luteum - ANSWER-LH
stimulates growth of eggs in the ovaries; highest level just before egg is released
by ovary - ANSWER-FSH
Where should implantation of fertilized egg occur? - ANSWER-fundus of uterus
(top)
why should the egg implant in the fundus? - ANSWER-rich blood supply, helps
with contractions, and the thick lining keeps fetus from implanting too deep in the
uterus
embryonic stage - ANSWER-the period of prenatal development that lasts from
the 2nd week until about the 8th week
,supplies the embryo with food and later forms the major part of the placenta -
ANSWER-trophoblast
becomes the fetus - ANSWER-embryonic disc
3 layers of embryonic disk - ANSWER-ectoderm-brain/skin/nervous system
mesoderm-heart/reproductive/bone/blood vessels
endoderm-lungs and GI system/liver
Why is folic acid important? - ANSWER-it is ssential before pregnancy and in
early weeks of pregnancy to prevent neural tube defects in the fetus. (good
sources of folic acid: dark green vegies, such as brocolli, romaine lettuce, and
spinach, baked beans, black-eyed peas, citrus fruits, peanuts, and liver)
When is organogenesis complete? - ANSWER-8 weeks
What are teratogens? - ANSWER-substances that may produce physical or
functional defects in the human embryo or fetus if a pregnant lady is exposed
(alcohol/cocaine)
why is it crucial to stay away from teratogens during the embryonic stage? -
ANSWER-organogenesis-organs growing quickly and more likely to cause severe
damage at this time
fetal period (fetus) - ANSWER-9 weeks to birth
when does a fetus' eyes close - ANSWER-9weeks
When can you hear fetal heart tones? - ANSWER-10-12 wks
what makes up the amniotic fluid? - ANSWER-Maternal blood at first and then
fetal urine
when is the external genitalia formed? - ANSWER-9-12 weeks
another name for fetal movement - ANSWER-quickening
, when is quickening felt by mother - ANSWER-first baby-17-20weeks (nulliparous)
second + 13-16 weeks (multiparous)
waxy cheesecake substance that protects the fetus' skin from amniotic fluid that
could cause chaffing in the womb - ANSWER-vernix
lanugo - ANSWER-fine, soft hair, that covers the body and limbs of a human fetus
or newborn-protects skin and helps make it easier for vernix to adhere to baby's
skin
what is the purpose of brown fat in the fetus - ANSWER-provides warmth after
birth-forms 17-20weeks
What is surfactant? - ANSWER-chemical produced in the lungs to maintain the
surface tension of the alveoli and keep them from collapsing
When does surfactant production begin? - ANSWER-21-24 weeks
When is a fetus considered viable? - ANSWER-21-24 weeks after surfactant
productions begins
when do the eyes reopen - ANSWER-26weeks
why will the baby most likely be in a vertex position at 25-28weeks? - ANSWER-
prepare for delivery/head is heavier so the fetus flips
when do fingernails and toenails develop - ANSWER-29-32weeks
growth and weight gain occur and lungs mature - ANSWER-33-40 weeks
what is the function of the amniotic fluid? - ANSWER-protections from injury,
help baby move-which is important in bone growth, temperature
how does the fetus make pee? - ANSWER-breathes in amniotic fluid-swallows-
digests-and makes pee
<500ml of amniotic fluid - ANSWER-oligohydramnios
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