René Descartes once described the pineal gland as “the principal seat of the soul.” Medical knowledge has vastly progressed since his time, though. Here’s what we know about this critical organ.

Modern medicine and science knows a lot about the human body. No matter how knowledgeable someone is, however, nobody would claim that they know everything that can be known about it. One little gland ...

Your brain contains a small pine cone-shaped gland called the pineal gland. It’s about the size of a grain of rice. However, that size can vary in animals depending on their location. ‌This tiny gland ...

The pineal gland, a reddish-gray, pine cone-shaped part of the brain, is unremarkable at first glance: It’s about a third of an inch long and tucked deep in the brain, near the center and between both ...

This is a preview. Log in through your library . Abstract Exposure to light reduces the ability of the rat pineal gland to synthesize melatonin and decreases the weight of the gland. When the ...