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What is pineal gland primarily responsible for? In your endocrine system, what is the...

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veed | Student, Undergraduate | eNotes Newbie

Posted October 29, 2008 at 1:20 AM via web

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What is pineal gland primarily responsible for?

In your endocrine system, what is the pineal gland primarily responsible for controlling?

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goldcat419 | Middle School Teacher | (Level 1) Adjunct Educator

Posted October 29, 2008 at 11:43 AM (Answer #1)

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The pineal gland is  responsible for controlling the production of the hormone melatonin, which helps to regulate sleep.  Melatonin production increases when there is less light present, making humans sleepy. The pineal gland includes light sensitive cells, which are activated through the retina of the eye.  These cells can sense how much light is present, and signal the gland to make more or less melatonin.

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isaxgrl | High School Teacher | (Level 2) eNoter

Posted November 28, 2008 at 4:33 AM (Answer #2)

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in addition to previous answer (which is entirely correct); the pineal gland also impacts the onset of puberty. The actual mechanism is not yet understood--we simply know pineal gland function / dysfunction can be linked to early and / or delayed start of puberty.

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