Physiology · Endocrine System · Easy
Oestrogen
Meaning: The main group of female sex hormones that drive breast development, regulate the menstrual cycle and help maintain bone density.
In practice: Falling oestrogen after menopause accelerates bone loss and raises osteoporosis risk.
Quick check
Two questions on related physiology words.
Which word means: A chemical messenger released by a nerve cell to pass a signal across a synapse to another cell.
Answer: Neurotransmitter
Which word means: Thinning and shortening of the cervix during labour.
Answer: Effacement
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