Other placental mammals undergo a process where the uterus lining is reabsorbed into the body, a process sometimes called concealed ovulation. Apparently, our lining is too thick to be reabsorbed.
GCSE scientists – you need to be able to explain the stages of the menstrual cycle, and how hormones control it. For help with this, try our new guide “How to work with the Menstrual Cycle”. It includes a description of the stages, and how hormones interact to control it. As always there are questions to try, and answers to check understanding.
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