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Definition of «pineal»

The pineal gland is a small endocrine gland located deep within the brain, behind and between the eyes. It is part of the limbic system which also includes the amygdalae and hippocampus. The pineal gland produces melatonin, a hormone that regulates sleep-wake cycles, and it may also play a role in other functions such as circadian rhythms, mood regulation, and neuroprotection. In some cultures, the pineal gland is considered to be the "third eye" or the seat of spiritual insight.

Usage examples

  1. The pineal gland, also known as the pineal body, is a small endocrine gland located in the brain of vertebrates.
  2. The pineal gland produces and secretes the hormone melatonin, which regulates sleep-wake cycles and plays a role in maintaining circadian rhythms.
  3. Some believe that the pineal gland is the "third eye" or "seat of the soul" due to its association with spiritual experiences and consciousness.
  4. Dysfunction or calcification of the pineal gland has been linked to certain sleep disorders, mood disorders, and even certain types of tumors.
  5. The pineal gland is often depicted as a pinecone-shaped structure, hence the name "pineal" derived from the Latin word "pinea" meaning pinecone.

Phrases with «pineal»

Sentences with «pineal»

  • Sodium fluoride, present in your drinking water and certain store - bought products, and other sources such as Prozac, antibiotics or non-stick cookware could all be contributing to the alarming increase in pineal gland calcification. (fullhealthsecrets.com)
  • Melanopsin cells in mammals are specialized for measuring ambient illumination, contributing to visual discrimination [8,9], and driving a wide variety of physiological responses including, but not restricted to: synchronization of circadian clocks to light: dark cycles, regulation of pupil size, modulation of sleep and suppression of pineal melatonin production [10 — 14]. (rspb.royalsocietypublishing.org)
  • In the chick pineal body, activity of the melatonin - forming enzyme hydroxyindole - O - methyl transferase is greater in the light than in darkness. (science.sciencemag.org)
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See also

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