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Practice Listening: Summarize Spoken Text
ID: #60034
Short
Melatonin
Transcript:
I'm just going to take on where stuff left off. The hormone I want to now talk about it's called melatonin. The synthesis is in the pineal gland, which is very small. It is the size of a pea in your brain. Descartes called it the 'seat of soul', and it is where melatonin is made. And it has a rhythm as well. And in the sense, it is the opposite of the cortisol. It peaks at night. We call it as the darkness hormone. In every species that we studied, melatonin occurs at night. And it's hormone that prepares you for the things that your species does at night. So, of course, in humans we sleep, but animals, like rodents, they are awake. So, it's a hormone that is related to darkness behavior.
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