NURS 617 MIDTERM EXAM 250 QUESTIONS &
CORRECT ANSWERS LATEST 2025
descent of the fetus into the true pelvis about 4 wks prior to labor
lightening
triggers that promote cervical change include increase in ____, ___ and ___
activity
inflammation, oxytocin, prostaglandin
lengthening of muscle fibers at the internal cervical os
effacement
in nulliparous women, ___ precedes ____
effacement, dilation
widening of the cervical os
dilation
the passing of the mucous plug often indicates impending labor in ___ hours
48
phases of parturition include
0- quiescence
1- ___
2- ____
3- ____
activation, stimulation, involution
inhibitors of uterine contractions include ___, prostacyclin, relaxin, and ____ ___
progesterone, nitrous oxide
___ stimulates upregulartion of myometrial receptors for oxytocin and pg and
activation of gap junctions in activation stage
,estrogen
___ and ___ promote labor progression in stimulation stage
oxytocin, prostaglandins
uterine involution after birth is mediated by ___ and possibly ___
oxytocin, thrombin
transmembrane proteins that create a pore between myocytes and allow
propagation of action potentials to synchronize cxns
gap junctions
facilitates cxns, increases myometrial sensitivity to oxytocin, and stimulates
formation of gap jxns
prostaglandins
during the activation phase of labor, the placenta increases production of ___
crh
placental crh is transported to the fetus where is stimulates ___ production by
the fetal adrenal glands and ___ which serves as substrate for estrogen
production
cortisol, dheas
___ influences transition from progesterone to estrogen dominance in labor
through stimulation of fetal adrenal activity, which increases fetal production of
DHEA-s, this is then converted to ___ that oppose progesterone
crh, estrogen
pro inflammatory cytokines released at the onset of labor promote ___ entry into
smooth muscles and increased ___ production
calcium, prostaglandin
___ is the main player during the stimulation phase of labor
oxytocin
, oxytocin peaks with
fetal expulsion
oxytocin binds to oxytocin receptors that stimulate smooth muscle contractions
through a ___ dependent pathway
calcium
the relationship with prostaglandin and oxytocin is ___
bidirectional
changes in oxytocin ___ ___ and ___ rather than the amount of oxytocin is the
influence to the strength and frequency of cxns
receptor number, sensitivity
plasma levels of oxytocin change during the ___ stage of labor
second
the pattern of a cxn is referred to as ___, ___ and ___ phases of cxn
increment, acme, decrement
the uterine muscle is thickest at the ___
fundus
the line of demarcation between active and passive segments of the uterus is
termed physiologic ___ ____
retraction ring
with continued cxns, the uterine fundus becomes ___ and ___ and the lower
uterine segment becomes ___
shorter, thicker, longer
oxytocins primary role is to ____ labor
maintain
oxytocin is secreted primarily by
posterior pituitary
CORRECT ANSWERS LATEST 2025
descent of the fetus into the true pelvis about 4 wks prior to labor
lightening
triggers that promote cervical change include increase in ____, ___ and ___
activity
inflammation, oxytocin, prostaglandin
lengthening of muscle fibers at the internal cervical os
effacement
in nulliparous women, ___ precedes ____
effacement, dilation
widening of the cervical os
dilation
the passing of the mucous plug often indicates impending labor in ___ hours
48
phases of parturition include
0- quiescence
1- ___
2- ____
3- ____
activation, stimulation, involution
inhibitors of uterine contractions include ___, prostacyclin, relaxin, and ____ ___
progesterone, nitrous oxide
___ stimulates upregulartion of myometrial receptors for oxytocin and pg and
activation of gap junctions in activation stage
,estrogen
___ and ___ promote labor progression in stimulation stage
oxytocin, prostaglandins
uterine involution after birth is mediated by ___ and possibly ___
oxytocin, thrombin
transmembrane proteins that create a pore between myocytes and allow
propagation of action potentials to synchronize cxns
gap junctions
facilitates cxns, increases myometrial sensitivity to oxytocin, and stimulates
formation of gap jxns
prostaglandins
during the activation phase of labor, the placenta increases production of ___
crh
placental crh is transported to the fetus where is stimulates ___ production by
the fetal adrenal glands and ___ which serves as substrate for estrogen
production
cortisol, dheas
___ influences transition from progesterone to estrogen dominance in labor
through stimulation of fetal adrenal activity, which increases fetal production of
DHEA-s, this is then converted to ___ that oppose progesterone
crh, estrogen
pro inflammatory cytokines released at the onset of labor promote ___ entry into
smooth muscles and increased ___ production
calcium, prostaglandin
___ is the main player during the stimulation phase of labor
oxytocin
, oxytocin peaks with
fetal expulsion
oxytocin binds to oxytocin receptors that stimulate smooth muscle contractions
through a ___ dependent pathway
calcium
the relationship with prostaglandin and oxytocin is ___
bidirectional
changes in oxytocin ___ ___ and ___ rather than the amount of oxytocin is the
influence to the strength and frequency of cxns
receptor number, sensitivity
plasma levels of oxytocin change during the ___ stage of labor
second
the pattern of a cxn is referred to as ___, ___ and ___ phases of cxn
increment, acme, decrement
the uterine muscle is thickest at the ___
fundus
the line of demarcation between active and passive segments of the uterus is
termed physiologic ___ ____
retraction ring
with continued cxns, the uterine fundus becomes ___ and ___ and the lower
uterine segment becomes ___
shorter, thicker, longer
oxytocins primary role is to ____ labor
maintain
oxytocin is secreted primarily by
posterior pituitary
