What Is the Function of the Pineal Gland?

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Types of Glands: Glands are categorized into two types based on ducts. These include exocrine glands and endocrine glands.

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Exocrine Gland Definition: The glands with ducts are known as exocrine glands. Example: Sweat glands, salivary glands, digestive glands.

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Endocrine Gland Definition: The glands without ducts are known as endocrine glands.

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Example: Pituitary gland, pineal gland, thyroid gland, adrenal gland, testes, ovary.

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A small cone-shaped endocrine gland present in the brain is called the pineal gland.

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The word pineal was derived from the Latin word pineal, which means cone. Aaron Lerner discovered the pineal gland in 1958.

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It is a small cone-shaped endocrine gland located on the dorsal side of the brain.

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Pineal Gland Location: The pineal gland is located deep in the brain in the epithalamus, where two hemispheres of the brain are connected.

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The pineal gland is an endocrine gland found in vertebrates that is the source of the melatonin hormone.

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The pineal gland secretes the melatonin hormone. It is a sleep-inducing hormone.

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Melatonin hormone regulates sleep patterns. Sleep patterns are also known as circadian rhythms.

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Melatonin hormone production stimulates in the darkness and inhibits in the presence of light.

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The pineal gland contains light-sensitive cells which control the circadian rhythms.

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So, the pineal gland is also known as the third eye.

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