Assertion: castor oil | /r/Causes | contraction
Facets:
Source sentences:
text: In the small intestine, castor oil activates receptors in the smooth muscle causing contraction.
text: Castor oil should not be used by a pregnant woman, as it can cause contractions.
text: Because castor oil is an effective stimulant to the bowels, it has been theorized to also stimulate the uterus and cause contractions that can help speed labour.