Thyroid Gland Anatomy and Functions Quiz

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Questions and Answers

What is the functional unit of the thyroid gland?

  • Follicular cells
  • Lumen containing colloid
  • Parafollicular cells
  • Thyroid follicle (correct)

Which hormone plays a role in calcium homeostasis?

  • Thyroxine (T4)
  • Calcitonin (correct)
  • Thyroid-stimulating hormone (TSH)
  • Triiodothyronine (T3)

What is the shape of the thyroid gland?

  • Butterfly-shaped (correct)
  • Circular
  • Oval
  • Rectangular

Where is the thyroid gland located in humans?

<p>In the neck (C)</p> Signup and view all the answers

What regulates the secretion of thyroid hormones?

<p>Thyroid-stimulating hormone (TSH) (B)</p> Signup and view all the answers

What are the two thyroid hormones?

<p>Triiodothyronine (T3) and thyroxine (T4)</p> Signup and view all the answers

What is the role of calcitonin?

<p>Calcitonin plays a role in calcium homeostasis</p> Signup and view all the answers

Where is the thyroid gland located in humans?

<p>In the neck below the Adam's apple</p> Signup and view all the answers

What regulates the secretion of thyroid hormones?

<p>Thyroid-stimulating hormone (TSH)</p> Signup and view all the answers

What is the functional unit of the thyroid gland?

<p>The spherical thyroid follicle, lined with follicular cells and occasional parafollicular cells</p> Signup and view all the answers

Flashcards

What is the thyroid follicle?

The thyroid follicle is responsible for the production and release of thyroid hormones, T3 and T4.

What does calcitonin do?

Calcitonin is a hormone produced by the thyroid gland that helps regulate calcium levels in the blood.

What shape is the thyroid gland?

The thyroid gland is shaped like a butterfly, with two lobes connected by a narrow strip of tissue called the isthmus.

Where is the thyroid gland located?

The thyroid gland is located in the neck, just below the Adam's apple.

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How is thyroid hormone release regulated?

Thyroid-stimulating hormone (TSH) is secreted by the pituitary gland and controls the release of thyroid hormones from the thyroid gland.

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What are the main thyroid hormones?

Triiodothyronine (T3) and thyroxine (T4) are the two main thyroid hormones.

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How does calcitonin help in calcium homeostasis?

Calcitonin helps regulate calcium levels in the blood by inhibiting bone resorption (breakdown of bone) and promoting bone formation.

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Where is the thyroid gland located?

The thyroid gland is located in the neck region, just below the Adam's apple, near the trachea.

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What hormone controls thyroid hormone secretion?

Thyroid-stimulating hormone (TSH) is a hormone from the pituitary gland that triggers the thyroid gland to release its hormones.

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What is the functional unit of the thyroid gland?

The thyroid follicle is a spherical unit within the thyroid gland. It's lined with follicular cells, which produce thyroid hormone.

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