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  4. Melatonin is secreted by which is located at . (i) (ii) A Pineal Dorsal side of the forebrain B Pineal Middle side of the forebrain C Pineal Base of the diencephalon D Pineal Ventral side of the forebrain

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Q. Melatonin is secreted by __________ which is located at __________ .
(i) (ii)
A Pineal Dorsal side of the forebrain
B Pineal Middle side of the forebrain
C Pineal Base of the diencephalon
D Pineal Ventral side of the forebrain

NTA AbhyasNTA Abhyas 2020Chemical Coordination and Integration

Solution:

The Pineal Gland
Location : Dorsal side of forebrain.
Hormone secreted : Melatonin.
Functions of melatonin :
$1.$ Melatonin is very important for the regulation of a 24-hour (diurnal) rhythm of our body.
Example : It helps in maintaining the normal rhythms of sleep-wake cycle, body temperature, etc.
$2.$ It also affects - metabolism, pigmentation, menstrual cycle and our immune system.