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Question
Melatonin is secreted by _____.
Melatonin is secreted by _____.
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Solution
The correct option is D Pineal body
Pineal gland is a stalked, small rounded organ. It is located on the dorsal side of the forebrain. It secretes two hormones – melatonin and serotonin. Melatonin plays a very important role in the regulation of a 24-hour (diurnal) rhythm of our body. For example, it helps in maintaining the normal rhythms of sleep-wake cycle, body temperature. In addition, melatonin also influences metabolism, pigmentation, the menstrual cycle as well as our defense capability.
Pituitary gland secretes a number of hormones, e.g., follicle-stimulating hormone, luteinising hormone, oxytocin etc. Thyroid secretes thyroxine and triiodothyronine. Skin synthesize vitamin D in the presence of sunlight.
Pineal body
Pineal gland is a stalked, small rounded organ. It is located on the dorsal side of the forebrain. It secretes two hormones – melatonin and serotonin. Melatonin plays a very important role in the regulation of a 24-hour (diurnal) rhythm of our body. For example, it helps in maintaining the normal rhythms of sleep-wake cycle, body temperature. In addition, melatonin also influences metabolism, pigmentation, the menstrual cycle as well as our defense capability.
Pituitary gland secretes a number of hormones, e.g., follicle-stimulating hormone, luteinising hormone, oxytocin etc. Thyroid secretes thyroxine and triiodothyronine. Skin synthesize vitamin D in the presence of sunlight.
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