labor and delivery Flashcards
cervix has no muscle
yep, it does not contracts
ripening which where there is an alteration in _______ and increased/ decreased collagen solubility occurs in the cervix and corpus
ripening which where there is an alteration in ground substance and increased collagen solubility occurs in the cervix and corpus
ripening there is an upregulation of
hyaluronic acid which is extremely hydrophilics and becomes easy to move through when hydrated
how can labor be inhibited
by calcium channel blockers or calcium antagonists
High affinity, low capacity receptors
80-fold increase in number by term
Marked increase in sensitivity
Act by raising intracellular free calcium levels
oxytocin
______ stimulates actomyosin formation and muscular contraction
Calcium
Parturition is first and foremost a proinflammatory event
yep
high CRH
delivery early
short cervical length
increased risk for premature labor
tocolysis
stops labor: PG inhibitors,
onset o f labor with slow cervical dilation to ~4 cm and variable duration
slow dilation
latent phase
faster rate of cervical change, 1-1.2 cm /hour, regular uterine contractions
fast dilation
active phase
Interval between the onset of labor and full cervical dilation
first stage of labor
Interval between full cervical dilation to delivery of the infant.
Characterized by descent of the presenting part through the maternal pelvis and expulsion of the fetus.
second stage of labor
The time from fetal delivery to delivery of the placenta
third stage of labor