Assertion: progesterone's role | /r/HasProperty | vital
Facets:
value: especially
type: DEGREE
Source sentences:
text: During the secretory phase, the corpus luteum produces progesterone, which plays a vital role in making the endometrium receptive to implantation of the blastocyst and supportive of the early pregnancy, by increasing blood flow and uterine secretions and reducing the contractility of the smooth muscle in the uterus; it also has the side effect of raising the woman's basal body temperature.
text: Once it does its job, estrogen and progesterone play an especially vital role during the first and second trimesters in triggering fetal development as well as common pregnancy symptoms.