本题目来源于试卷: SL/HL Topic D3.1 Reproduction，类别为 IB生物学
[问答题]
10. Discuss the roles of progesterone and oxytocin during x 0qp:h2 ayuaon(1pn)pregnancyyplfg e1x1n)c6qd 3i4 fb+oe 5 and childbirthnlyod 3e6)cx g1eb i4p1fq5f+ .
参考答案: Progesterone maintains the uterine lining during pregnancy.
Progesterone inhibits FSH/suspends ovarian cycle.
Progesterone inhibits oxytocin/inhibits uterine contractions.
Near childbirth, progesterone levels drop.
Oxytocin release increases.
Oxytocin promotes uterine contractions for childbirth.
(and through more contractions) Oxytocin release causes more release of oxytocin/positive feedback.
本题详细解析:
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