The body's 'slow' chemical communication system; a set of glands that secrete hormones into the bloodstream.

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Multiple Choice

The body's 'slow' chemical communication system; a set of glands that secrete hormones into the bloodstream.

The body's slow chemical communication system is the endocrine system. It’s a network of glands—such as the pituitary, thyroid, adrenals, pancreas, and gonads—that release hormones into the bloodstream. Once in the blood, these hormones travel to distant target organs and tissues to regulate processes like metabolism, growth, mood, and reproduction. Because the signals travel through the bloodstream rather than along nerves, their effects tend to develop more slowly and last longer than fast, point-to-point neural signaling. Aphasia is a language impairment, not a signaling system. Endorphins are specific signaling chemicals that can act as hormones or neurotransmitters, but they’re individual substances, not the entire system of glands and hormone pathways.

The body's slow chemical communication system is the endocrine system. It’s a network of glands—such as the pituitary, thyroid, adrenals, pancreas, and gonads—that release hormones into the bloodstream. Once in the blood, these hormones travel to distant target organs and tissues to regulate processes like metabolism, growth, mood, and reproduction. Because the signals travel through the bloodstream rather than along nerves, their effects tend to develop more slowly and last longer than fast, point-to-point neural signaling.

Aphasia is a language impairment, not a signaling system. Endorphins are specific signaling chemicals that can act as hormones or neurotransmitters, but they’re individual substances, not the entire system of glands and hormone pathways.

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