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5 March, 14:28

Melatonin is a molecule that is produced in the pineal gland and secreted into the blood. Melatonin then travels to different parts of the brain. It causes drowsiness and decreases body temperature to assist in the regulation of the sleep/wake cycle. What kind of control is used to regulate this molecule?

A.

muscular control, because the muscles can be used to control the release of melatonin

B.

neural control, because the brain sends the signal to release melatonin through nerve cells

C.

cardiovascular control, because melatonin flows through the blood to deliver the message

D.

endocrine control, because melatonin is secreted into the blood and regulates body processes

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Answers (2)
  1. 5 March, 18:06
    0
    The answer is D.

    Melatonin is a molecule that is produced in the pineal gland and secreted into the blood. Melatonin then travels to different parts of the brain. It tells the brain and the rest of the body about the time of wake and sleep. It causes drowsiness and decreases body temperature to assist in the regulation of the sleep/wake cycle. The melatonin secretion into the blood is regulated by the endocrine system, by the hypothalamus which on gets stimulated by the light.
  2. 5 March, 18:16
    0
    The correct answer is option D which is that endocrine control can control melatonin.

    Explanation: As melatonin is released from pineal gland which is a part of endocrine system. The endocrine system is a chemical messenger system which has glands, which secretes certain chemicals known as hormone. These hormone acts on different organs to control different metabolisms in body. So melatonin which is hormone can be controlled by the endocrine system.
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