A client in labor is agitated and nervous about the birth of her child. The nurse explains to the client that fear and anxiety cause the release of certain compounds that can prolong labor. The nurse is referring to which compounds?

Choice A rationaleProstaglandins are involved in labor but primarily act to ripen the cervix and induce uterine contractions, not prolong labor. They are produced by the fetus and placenta during pregnancy.Choice B rationaleCatecholamines, such as epinephrine and norepinephrine, are released in response to stress and anxiety, leading to vasoconstriction, reduced blood flow to the uterus, and prolonged labor. They are produced by the adrenal glands.Choice C rationaleOxytocin is a hormone that stimulates uterine contractions and accelerates labor. It is often administered to induce or augment labor, rather than prolong it. It is produced in the hypothalamus.Choice D rationaleOrexin, also known as hypocretin, is involved in regulating arousal, wakefulness, and appetite, but has no direct role in labor. It is produced in the hypothalamus.