Question The body is able to maintain a relatively constant level of thyroxine in the blood because? Thyroxine stimulates the pituitary to secrete thyroid- stimulating hormone (TSH). Thyroxine inhibits the secretion of TSH-releasing hormone (TRH) from the hypothalamus. CORRECT ANSWER TRH inhibits the secretion of thyroxine by the thyroid gland. Thyroxine stimulates the hypothalamus to secrete TRH.

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Substance Abuse

Substance abuse refers to the use of illegal drugs in excessive quantities, as well as the misuse of legal substances such as prescription or over-the-counter pharmaceuticals or alcohol for purposes other than those intended. Drug addiction, also known as substance use disorder, is a disease that affects the brain and behavior of a person. It leads to a failure to control the use of any drug or prescription, legal or illegal.