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Multiple Choice
Which hormone works with calcitonin to regulate calcium levels in the blood and tissues?
A
Glucagon
B
Insulin
C
Parathyroid hormone
D
Aldosterone
Verified step by step guidance
1
Understand the role of calcium regulation in the body: Calcium levels in the blood and tissues are crucial for various physiological functions, including bone health, muscle contraction, and nerve signaling.
Identify the hormones involved in calcium regulation: Calcitonin and parathyroid hormone (PTH) are the primary hormones that regulate calcium levels in the body.
Learn the function of calcitonin: Calcitonin is produced by the thyroid gland and helps lower blood calcium levels by inhibiting osteoclast activity, which reduces bone resorption.
Explore the role of parathyroid hormone (PTH): PTH is secreted by the parathyroid glands and works to increase blood calcium levels by stimulating osteoclasts to break down bone and release calcium, enhancing calcium reabsorption in the kidneys, and promoting the activation of vitamin D to increase intestinal absorption of calcium.
Recognize the interaction between calcitonin and PTH: These hormones work in opposition to maintain calcium homeostasis. Calcitonin decreases blood calcium levels, while PTH increases them, ensuring a balanced calcium level in the body.