Anatomy & Physiology Endocrine #17

Question

Which electrolyte is primarily maintained by the parathyroid glands?

Answers

  1. Sodium
    • Rationale:

      Sodium is not an electrolyte that is maintained by the parathyroid glands.

  2. Potassium
    • Rationale:

      Potassium is not an electrolyte that is maintained by the parathyroid glands.

  3. Magnesium
    • Rationale:

      Magnesium is not an electrolyte that is maintained by the parathyroid glands.

  4. Phosphorus
    • Rationale:

      Phosphorus, in addition to calcium, are the electrolytes that are maintained by the parathyroid glands.

Overview

The parathyroid glands are two pairs of glands. They found bilaterally on both sides of the neck area just behind the thyroid gland.

Explanation

Learning Outcomes

The primary role of the parathyroid glands is to control the amount of circulating electrolytes; specifically, calcium and phosphorus. These electrolytes play a vital role in maintaining normal function of the nervous system. In addition, these electrolytes also play an important role in the formation and maintenance of bone and teeth.

This control in the circulating blood is accomplished with the parathyroid glands’ production and secretion of parathyroid hormone.

Test Taking Tip

Consider the function of the parathyroid glands to correctly answer this question.

Video Rationale