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What is the role of parathyroid hormone (PTH) in the body?

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Question: What is the role of parathyroid hormone (PTH) in the body?

Options:

  1. Increase blood calcium levels
  2. Decrease blood calcium levels
  3. Regulate blood sugar
  4. Stimulate red blood cell production

Correct Answer: Increase blood calcium levels

Solution: 

Parathyroid hormone (PTH) increases blood calcium levels by stimulating osteoclast activity, increasing intestinal absorption of calcium, and promoting renal reabsorption of calcium.

What is the role of parathyroid hormone (PTH) in the body?

Practice Questions

Q1
What is the role of parathyroid hormone (PTH) in the body?
  1. Increase blood calcium levels
  2. Decrease blood calcium levels
  3. Regulate blood sugar
  4. Stimulate red blood cell production

Questions & Step-by-Step Solutions

What is the role of parathyroid hormone (PTH) in the body?
  • Step 1: Understand that parathyroid hormone (PTH) is a hormone produced by the parathyroid glands in the neck.
  • Step 2: Know that the main job of PTH is to control the level of calcium in the blood.
  • Step 3: Learn that PTH increases blood calcium levels in three main ways.
  • Step 4: First, PTH stimulates osteoclasts, which are cells that break down bone and release calcium into the blood.
  • Step 5: Second, PTH helps the intestines absorb more calcium from the food we eat.
  • Step 6: Third, PTH promotes the kidneys to reabsorb calcium, meaning less calcium is lost in urine.
  • Step 7: By doing these three things, PTH helps keep calcium levels in the blood balanced and healthy.
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