ziyadmd:

Scientists have been mystified by the pineal gland for centuries. As the brain and central nervous and endocrine systems were progressively unravelled by the anatomists, physiologists and biochemists, the pineal gland resolutely refused to yield up its secrets. Until recently the scientific community regarded it as having no function in man, being but a vestigial remnant from an earlier stage in evolution. However, in the last few years interest in the gland has reached a climax when no fewer than ten national and international conferences devoted entirely to unravelling the secrets of the mysterious pineal have been held around the world.

Physically, the pineal is perhaps the smallest organ of the body. Such a minute structure has rarely, if ever, caused so much curiosity and commotion. It is a tiny grey white structure approximately inch long, weighing about 100 milligrams, and shaped like a pine-cone. It is located directly at the top of the spinal cord within the brain at the level where the head and neck are joined. It lies attached to the roof of the third ventricle (fluid filled canal) of the brain directly in line with the point between the eyebrows. It is the only structure in the brain, apart from the pituitary gland, which is not bilaterally symmetrical, lying right in the midline. This means that, except for these two glands, the two halves of the brain when it has been cut from front to back, are mirror images of each other, with each structure being duplicated, one for each half.

It is interesting to trace the scientific history of the pineal gland to the present day.

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