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Multiple Choice
The parathyroid glands secrete which hormone?
A
Cortisol
B
Parathyroid hormone (PTH)
C
Insulin
D
Thyroid-stimulating hormone (TSH)
Verified step by step guidance
1
Identify the location and function of the parathyroid glands. These are small glands located behind the thyroid gland in the neck, and they play a crucial role in regulating calcium levels in the blood.
Understand the primary hormone secreted by the parathyroid glands. The parathyroid glands secrete parathyroid hormone (PTH), which is essential for maintaining calcium homeostasis.
Differentiate between the hormones listed in the problem. Cortisol is a steroid hormone produced by the adrenal glands, insulin is a hormone produced by the pancreas, and thyroid-stimulating hormone (TSH) is produced by the pituitary gland to regulate thyroid function.
Recognize the role of parathyroid hormone (PTH). PTH increases blood calcium levels by stimulating osteoclasts to break down bone and release calcium, increasing calcium reabsorption in the kidneys, and promoting the activation of vitamin D in the kidneys to enhance intestinal absorption of calcium.
Conclude that the correct hormone secreted by the parathyroid glands is parathyroid hormone (PTH), based on its function and the glands' role in calcium regulation.