As the world goes dark, this master switch tells our pineal gland to increase levels of the hormone melatonin in the bloodstream, sort of like a chemical lullaby.
As it gets later and dark outside, the pineal gland in your brain starts to release the hormone, and it binds to receptors deep in the brain to help usher you into dreamland.
As you go to sleep and finally begin to drift off, melatonin is secreted by the pineal gland which begins the sleep cycle, which happens multiple times through the night.
And the master gland in your body is the pituitary, which produces many hormones that signal other glands — like the thyroid, parathyroid, adrenal, and pineal glands — to make their own hormones.
Every once in a while, sudden soreness triggered a twinge of discomfort and shame. Whoever said the soul and the body met in the pineal gland was a fool. It's the asshole, stupid.
These cells are found in glands, like the supratentorial pineal gland which is located just behind the third ventricle, or the infratentorial pituitary gland located near the front of the third ventricle.
As long as the mind is in the body, he believed, it is linked to the brain through a special brain organ which he called the pineal gland, where a constant interaction takes place between 'spirit' and 'matter.
Well, deep inside our brain we find the same structure, the pineal gland, which we also use to sense night and day, and tell us when it's time to sleep.
And the studies indicate there may be the suggestion is there may be something somewhat different about our pineal gland, but you know, we're all good at different things.
医学百科 The Medicine Book (Big Ideas Simply Explained)
Hormones are made by specialised cells mostly found in the endocrine glands, the hypothalamus, testes and ovaries, and the thyroid, parathyroid, pituitary, adrenal and pineal glands.