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Calcitonin

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Questions and Answers

Which hormone is produced in the parafollicular cells of the thyroid?

Parathyroid hormone

Calcitonin (correct)

Insulin

Thyroxine

What is the function of calcitonin?

Decreases blood calcium levels (correct)

Increases bone breakdown

Increases blood calcium levels

Increases bone formation

How does calcitonin affect bone reabsorption?

It promotes osteoblast activity

It inhibits osteoclasts (correct)

It promotes osteoclast activity

It inhibits osteoblasts

What is the target tissue of calcitonin?

Bone Signup and view all the answers

Which hormone is secreted from the parathyroid gland?

Parathyroid hormone Signup and view all the answers

What is the function of parathyroid hormone?

Increases blood calcium levels Signup and view all the answers

How does parathyroid hormone affect calcium within the bone?

It inhibits osteoclasts Signup and view all the answers

What does parathyroid hormone increase the absorption of?

Calcium from food Signup and view all the answers

Study Notes

Thyroid Hormones

Calcitonin is produced in the parafollicular cells of the thyroid gland.
The primary function of calcitonin is to decrease blood calcium levels.

Calcitonin's Effects

Calcitonin inhibits bone reabsorption, reducing the breakdown of bone tissue.
Calcitonin targets bone tissue, specifically osteoclasts, to reduce their activity.

Parathyroid Hormone

Parathyroid hormone is secreted from the parathyroid gland.
The primary function of parathyroid hormone is to increase blood calcium levels.

Parathyroid Hormone's Effects

Parathyroid hormone stimulates bone reabsorption, increasing the breakdown of bone tissue and releasing calcium into the bloodstream.
Parathyroid hormone increases the absorption of calcium from food in the intestines.

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Description

Test your knowledge on calcitonin, a hormone secreted by the thyroid gland that regulates blood calcium levels by promoting bone formation and inhibiting bone breakdown. Learn about its functions and how it differs from parathyroid hormone in this quiz.