The chemicals that are released from the hypothalamus, the gonads, and the adrenal cortex are called ________, whereas the chemicals released by bioelectrical impulses throughout the brain are called ________.

Question

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The chemicals released from the hypothalamus, the gonads, and the adrenal cortex are hormones, which circulate through the bloodstream to affect distant organs. The chemicals released by bioelectrical impulses throughout the brain are neurotransmitters, which transmit signals across a chemical synapse from one neuron to another target neuron.

The Chemicals That Are Released from the Hypothalamus, the Gonads