The chemical messengers that are produced in the body are called hormones. Hormones act on target tissues as their secretions are directly poured in the bloodstream. Stimulation of anterior pituitary gland leads to the release of thyroid hormone.

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Chapter 50, Problem 4TY

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Introduction: The chemical messengers that are produced in the body are called hormones. Hormones act on target tissues as their secretions are directly poured in the bloodstream. Stimulation of anterior pituitary gland leads to the release of thyroid hormone.

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