David Has Been Feeling Tired Lately, and After Having Blood

question 49

Multiple Choice

David has been feeling tired lately, and after having blood work completed, it shows elevated TSH, low iodine, and low thyroid hormone levels. Predict the possible cause from the choices below.

• A) David could possibly have a thyroid tumor.
• B) David may have iodine deficiency that is causing his thyroid to produce too little thyroid hormone.
• C) David could have a pituitary gland tumor.
• D) Too little information is given to determine the cause.

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Definitions:

Protein

Large biomolecules, or macromolecules, consisting of one or more long chains of amino acid residues, vital for body structure and function.

Fat Metabolism

The biochemical process involving the breakdown, synthesis, and transformation of fats in the body for energy and cellular functions.

Pituitary

A tiny gland at the base of the brain responsible for regulating vital bodily functions and general well-being through the secretion of hormones.

Master Gland

Informal term for the pituitary gland, due to its role in controlling several other hormone-secreting glands in the body.