A hormone which is secreted by the placenta to make the cervix relax and open fully in the final stages of pregnancy before childbirth.
A small peptide hormone produced by the corpus luteum of the ovary during the first and second trimesters of pregnancy. It is structurally similar to insulin with two peptide chains (A and B). The role of this hormone is unclear; it has been noticed to increase just prior to parturition (birth).
Hormone, secreted by the corpus luteum during the last stages of pregnancy, that causes the cervix to dilate and prepares the uterus for labor.
A hormone, secreted by the ovaries (corpus luteum) in the terminal stages of pregnancy, that causes the neck (cervix) of the womb to dilate and prepares the womb for the action of oxytocin during labor.
A polypeptide hormone related to insulin in women secreted in the corpus luteum during pregnancy and by the prostate in men. It has many effects on breast, uterine, cardiac, and other tissues.