CONNECTIVE TISSUE GLAND
ENDOCRINE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which hormone do pinealocytes produce?
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Melanin
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Serotonin
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Melatonin
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Tryptophan
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Explanation:
Detailed explanation-1: -The principal role of pinealocytes of the pineal gland (PG) is to synthesize and secrete the hormone melatonin, driven by the neurotransmitter norepinephrine (NE) released at night from sympathetic nerve terminals.
Detailed explanation-2: -Pinealocytes synthesize the hormone melatonin by first converting the amino acid tryptophan to serotonin. The serotonin is then acetylated by the AANAT enzyme and converted into N-acetylserotonin.
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