There are non-image-forming ganglion cells in the human eye (and other mammals) that are still photosensitive and receive light signals that can help regulate and suppress the production of what 'M' hormone that helps regulate the sleep-wake schedule?

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Considering all the tissues and cells in your body, 25 million new cells are being produced each second.


1. There are non-image-forming ganglion cells in the human eye (and other mammals) that are still photosensitive and receive light signals that can help regulate and suppress the production of what 'M' hormone that helps regulate the sleep-wake schedule?