Why do signs and symptoms of decreased thyroxine concentration not appear until about a week after a thyroidectomy (surgical removal of the thyroid gland)?
A)About a week's worth of thyroxine is stored in the liver.
B)About a week's worth of thyroxine is stored in the anterior pituitary gland.
C)Most of the thyroxine is bound to proteins in the bloodstream and the hormones are released gradually.
D)The parathyroid glands can take over function of the thyroid gland for a short period of time.
E)The anterior pituitary gland can start producing thyroxine.

Question

Quizplus · Accepted Answer

Most of the thyroxine is bound to proteins in the bloodstream and the hormones are released gradually, which means that there is a reserve of thyroxine that can be used for the body's needs for a week or so after the thyroidectomy before the symptoms of decreased thyroxine levels start to manifest.

Why Do Signs and Symptoms of Decreased Thyroxine Concentration Not