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| denoting a type of placenta in which maternal blood comes in direct contact with the chorion, as in humans. |
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| is a hormone released by the corpus luteum in the ovary. It plays important roles in the menstrual cycle and in maintaining the early stages of pregnancy. |
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| -inner cellular layer of the trophoblast |
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-syncytial layer of the trophoblast
-cells derived from cytotrophoblast fuse |
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characterized by a strictly limited period of:
• receptivity (female accepts sexual advances of males)
• proceptivity (female actively solicits sexual activity from males)
• female is sexually attractive to males |
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| Around the time of ovulation |
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| is a temporary endocrine structure involved in ovulation and early pregnancy. |
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| A mucous membrane lining the uterus, modified during pregnancy and shed at parturition or during menstruation. |
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| is the first menstrual cycle, or first menstrual bleeding, in female humans it also signals the possibility of fertility |
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| refers to the time period during which a woman's body makes its natural transition toward permanent infertility (menopause). is also called the menopausal transition. |
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| is a progressive bone disease that is characterized by a decrease in bone mass and density which can lead to an increased risk of fracture. |
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