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18. Hormonal control is.................. c. is always not optional d. is always reflex a. may be optional or not optional b. always optional​

User Geerten
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b. always optional​

Hormonal control involves the release of hormones by various endocrine glands in response to specific signals and stimuli. These hormones travel through the bloodstream and bind to specific receptors on target cells, influencing their activity and regulating various physiological processes.

User Fratrik
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