The endocrine system controls the body by means of chemical molecules called hormones.
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The endocrine system controls the body by means of chemical molecules called hormones, not a single organ.
What controls body processes by means of chemicals
Pituitary hormones directly control the release of hormones from other endocrine glands in the body, such as the thyroid, adrenal glands, and ovaries/testes. They also regulate growth, metabolism, stress response, and reproductive functions.
When more than one pair of alleles controls a trait, it is called polygenic inheritance. This means that multiple genes contribute to the expression of a trait, leading to a continuous range of variation rather than distinct categories. Examples of traits controlled by polygenic inheritance include height, skin color, and intelligence.
Gene
Humoral stimulus is a type of hormonal regulation in which the concentration of a particular substance in the blood triggers a response from a target cell or organ. This can involve hormones or other signaling molecules circulating in the bloodstream to control various physiological processes in the body.