单词	relaxin
释义	relaxin noun re·​lax·​in ri-ˈlak-sən  : a sex hormone of the corpus luteum that facilitates birth by causing relaxation of the pelvic ligaments Example Sentences Recent Examples on the Web From an athlete’s perspective, an important hormone of note is relaxin, which is produced by the ovaries and the placenta. Hayden Carpenter, Outside Online, 20 May 2021 And because relaxin continues to have a strong presence throughout breastfeeding, loose ligaments can persist long after childbirth. Hayden Carpenter, Outside Online, 20 May 2021 But like most hormones, relaxin circulates in the blood and can affect all ligaments, not just those associated with pregnancy. Hayden Carpenter, Outside Online, 20 May 2021 Meanwhile, the hormone relaxin loosens muscle ligaments to prepare for childbirth, which can also cause feet to spread and widen. Washington Post, 27 Apr. 2022 During pregnancy, the body releases a hormone called relaxin, which relaxes ligaments in preparation for childbirth. Ellen O'connell Whittet, Glamour, 19 Apr. 2021 The placenta also produces a hormone called relaxin, levels of which peak in the first trimester and then right before delivery. Garnet Henderson, Glamour, 26 Nov. 2020 Your posture and movement habits change during pregnancy from carrying around extra weight in new places, and your body also produces the hormones relaxin and progesterone, which loosen your ligaments and joints. Anna Nowogrodzki, New York Times, 17 Apr. 2020 Also, during pregnancy, your body releases the hormone relaxin to loosen up the ligaments in joints in your pelvis so the baby can eventually fit through the birth canal. Korin Miller, SELF, 31 Jan. 2019 See More Word History First Known Use 1930, in the meaning defined above Medical Definition relaxin noun re·​lax·​in ri-ˈlak-sən  : a polypeptide sex hormone of the corpus luteum that facilitates birth by causing relaxation of the pelvic ligaments
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