When pregnant, a woman has an increased sensitivity to the hormone angiotensin.
True
False
False
Breastfeeding prolongs the duration of time it takes for the uterus to shrink to its pre-pregnancy size.
True
False
False
Neonates will take their first breath only after umbilical cord vessels have been clamped.
True
False
False
Stretching of the cervix causes oxytocin secretion to
increase.
decrease.
increase
Braxton-Hicks contractions tend to be
regular and increasingly frequent as time passes.
increasingly intense as time passes.
irregularly spaced and do not become more frequent as time passes.
regular in timing but relatively weak.
irregularly spaced and do not become more frequent as time passes.
In the late stages of pregnancy, estrogen stimulates increased
release of hCG.
secretion of atrial natriuretic factor by the heart.
growth of the corpus luteum.
production of oxytocin receptors in the uterus.
production of oxytocin receptors in the uterus.
The structure of the mesoderm that induces formation of the neural tube is the
head mesenchyme.
amnion.
notochord.
paraxial mesoderm.
notochord
Typically, at the moment a full-term baby is born, the child's lungs are
fully inflated due to practice respiratory movements in the womb.
not fully inflated, but they will inflate within about ten seconds.
not fully inflated, and will not inflate fully for ten days, when surfactant production begins.
not fully inflated, but they will inflate within about ten seconds.
Cells within the embryoblast have the ability to differentiate into any type of cell within the body.
True
False
True
Release of breast milk occurs when the hormone_________ stimulates_________ cells to contract.
prolactin; mechanoreceptor
oxytocin; myoepithelial
estrogen; areolar
prolactin; mammary acini
oxytocin; suspensory
oxytocin; myoepithelial
Which type of food do women suffering from morning sickness generally prefer?
Carbohydrate-rich foods
Protein-rich foods
Carbohydrate-rich foods
After delivering a child, the levels of CRH in the mother's blood
increase.
decrease.
remain the same.
decrease.
The outer layer of the trophoblast that burrows into the lining of the uterus is the
embryoblast.
syncytiotrophoblast.
cytotrophoblast.
morula.
zona pellucida.
syncytiotrophoblast.
At the start of gastrulation, a long, thin depression known as the primitive_________ forms on the surface of the epiblast.
furrow
node
streak
groove
yolk
streak
Although pregnancies are highly variable, morning sickness is most commonly experienced in the_________ trimester.
first
second
third
first
Shortly after birth the pressure within the right side of the heart rises.
True
False
False
During pregnancy, estrogen and progesterone from the placenta
stimulate FSH and LH secretion and thereby stimulate ovarian follicle development.
inhibit FSH and LH secretion and thereby arrest ovarian follicle development.
stimulate GnRH secretion and thereby inhibit overgrowth of the uterus.
inhibit release of corticotropin-releasing hormone and thereby prevent excessive stress responses.
inhibit FSH and LH secretion and thereby arrest ovarian follicle development.
Cleavage involves a series of_________ divisions and_________ in the overall size of the conceptus.
meiotic; an increase
meiotic; no change
meiotic; a decrease
mitotic; no change
mitotic; an increase
mitotic; no change
The second trimester of a pregnancy includes months
2–5
4–6
5–7
5–9
4–6
Compared to breast milk, colostrum contains
more fat and more immunoglobulins.
more fat but less immunoglobulins.
less fat but more immunoglobulins.
less fat and less immunoglobulins.
less fat but more immunoglobulins.