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Identify/define and explain the significance of the following: Dmitry Mendeleev.
Gland
An organ in the body that secretes particular chemical substances for use in the body or for discharge into the surroundings.
Neurotransmitter
Chemicals in the nervous system that transmit signals across a synapse from one neuron to another, influencing mental processes and behavior.
Hypothalamus
A small region of the brain responsible for regulating physiological processes such as temperature regulation, hunger, thirst, and sleep cycles.
Hormones
Biochemical substances produced by glands in the endocrine system that regulate physiological activities by traveling through the bloodstream to target organs.
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