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Figure 1.2
Using the figure above, identify the labeled part.
-Label Z: ______________________________
Pineal Gland
A small endocrine gland in the brain that produces melatonin, a hormone that regulates sleep-wake cycles.
Hormones
Chemical messengers produced by glands in the body that regulate processes such as growth, metabolism, and mood.
Natural Opiates
Substances derived from the opium poppy plant that act on the nervous system to produce pain relief and euphoria.
Hormones
Chemical messengers produced by the endocrine glands that regulate various bodily functions and processes.