Multiple choice

Which of the following is an endocrine gland?

  1. Salivary

  2. Sweat

  3. Mammary

  4. Parathyroid
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The parathyroid glands are endocrine glands that secrete parathyroid hormone (PTH), which regulates calcium and phosphate metabolism. PTH increases blood calcium levels by stimulating bone resorption, increasing calcium reabsorption in kidneys, and activating vitamin D. Salivary, sweat, and mammary glands are exocrine glands that secrete substances through ducts to epithelial surfaces.

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