NCLEX RN Exam Preview Answers Related

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Which of the following descriptions best describes the function of the thyroid gland?

  • A. The thyroid gland converts glucose into glycogen
  • B. The thyroid gland secretes cortisol during times of stress
  • C. The thyroid gland regulates body metabolism
  • D. The thyroid gland affects skin pigmentation
Correct Answer: C

Rationale: The thyroid gland is responsible for secreting thyroxine (T4) and triiodothyronine (T3), which work to regulate the metabolism of the body's cells. The primary function of the thyroid gland is to control the body's metabolic rate, affecting processes such as heart rate, temperature regulation, and energy levels. Choices A, B, and D are incorrect because the thyroid gland is not involved in converting glucose into glycogen, secreting cortisol, or affecting skin pigmentation. Instead, the primary role of the thyroid gland is to regulate the metabolism and energy balance in the body.