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›a small endocrine gland in the vertebrate brain. It produces melatonin, a hormone that affects the modulation of wake/sleep patterns and photoperiodic (seasonal) functions.

›The pineal organ is small, weighing little more than 0.1 gram. It lies deep within the brain between the two cerebral hemispheres and above the third ventricle of the spinal column. It has a rich supply of adrenergic nerve fibers that greatly influence its secretions.

i am doing a project just thought id help... i hope it helped!(:

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12y ago
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Q: What can go wrong if the pineal gland is not fuctioning correctly?
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