During the final stages of human gestation, receptors for the hormone oxytocin increase onthe smooth muscle cells of the uterus. The release of oxytocin during labor stimulates thesmooth muscle tissue in the wall of the uterus. The vigorous contraction of the uterine smoothmuscle helps push the baby through the birth canal so that delivery can occur. This processinvolves the interaction of which organ systems? * A)Endocrine and muscular only
B)Endocrine and reproductive only
C)Endocrine, muscular, and reproductive
D)Endocrine, reproductive, and excretory