class=skin-invert-image|thumb|Chemical structure of met-enkephalin
I cannot provide an overview based on the context given, as it only shows an image caption identifying the chemical structure of met-enkephalin, without any explanatory text about endorphins or their function. To write an accurate overview, I would need actual informational content to draw from.
AI-generated from the Wikipedia summary — may contain errors.
class=skin-invert-image|thumb|Chemical structure of met-enkephalin
Endorphins (contracted from endogenous morphine) are peptides produced in the brain that block the perception of pain and increase feelings of wellbeing. They are produced and stored in the pituitary gland of the brain. Endorphins are endogenous painkillers often produced in the brain and adrenal medulla during physical exercise or orgasm and inhibit pain, muscle cramps, and relieve stress.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).