Which of the following glands secretes the hormone melatonin?
1. anterior pituitary gland
2. melanocytes
3. pineal gland
4. suprachiasmatic nucleus of the hypothalamus

Subtopic:  Pineal Gland |
 77%
Level 2: 60%+
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The 24 hour (diurnal) rhythm of our body such as the sleep-wake cycle is regulated by the hormone

1. calcitonin 

2. prolactin

3. adrenaline

4. melatonin

Subtopic:  Pineal Gland |
 95%
Level 1: 80%+
AIIMS - 2015
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Which of the following endocrine gland secretes melatonin

1. Pituitary gland 2. Pineal gland
3. Hypothalamus 4. Thymus
Subtopic:  Pineal Gland |
 90%
Level 1: 80%+
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Which of the following hormone regulates sleep-wake cycle ?

1. Melatonin 2. Thyroxine
3. Vasopressin 4. MSH
Subtopic:  Pineal Gland |
 95%
Level 1: 80%+
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Which of the following is true about melatonin?

1. It influences metabolism
2. It influences pigmentation
3. It influences menstrual cycle
4. All of these
Subtopic:  Pineal Gland |
 95%
Level 1: 80%+
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The amino acid, tryptophan is the precursor for the synthesis of?
1. thyroxine and tri-iodothyronine
2. estrogen and progesterone
3. cortisol and cortisone
4. melatonin and serotonin
Subtopic:  Pineal Gland |
Level 3: 35%-60%
NEET - 2016
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Artificial light, extended work-time and reduced sleep-time disrupt the activity of:

1. Thymus gland 2. Pineal gland
3. Adrenal gland 4. Posterior pituitary gland
Subtopic:  Pineal Gland |
 94%
Level 1: 80%+
NEET - 2019
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